ragweed如何读

英:[ˈrægwi:d]

美:[ˈræɡˌwid]

ragweed是什么意思

  • n.豚草

ragweed自然拼读

rag·weed

raeg wid

ragweed英英释义

  • n.
    • widespread European weed having yellow daisylike flowers; sometimes an obnoxious weed and toxic to cattle if consumed in quantity
    • any of numerous chiefly North American weedy plants constituting the genus Ambrosia that produce highly allergenic pollen responsible for much hay fever and asthma

ragweed词源中文解释

1790年,北美洲的一种复合开花植物因其花粉常引起过敏反应而被称为 ragged + weed(杂草)(n.); 其名称源于其叶子的形状。该名称曾被用于1650年代的另一种植物(旋覆花)。

ragweed词源英文解释

The first known use of ragweed was in 1790

ragweed儿童词典英英释义

railingnoun

a barrier (as a fence) consisting of rails and their supports

material for rails

rail1 of 4noun

a bar extending from one support to another and serving as a guard or barrier

railing sense 1

a bar of steel forming a track for wheeled vehicles

railroad

rail2 of 4verb

to provide with a railing

rail3 of 4noun

any of various small wading birds related to the cranes

rail4 of 4verb

to scold or complain in harsh or bitter language

range findernoun

a device used to find out the distance of an object (as a target)

ramble1 of 2verb

to move from place to place for no special reason

to talk or write without a clear purpose or point

to grow or extend irregularly

ramble2 of 2noun

a long stroll with no particular destination

a rambling story or discussion

rain forestnoun

an often tropical woodland with a high annual rainfall and very tall evergreen trees with tops forming a continuous layer called alsotropical rain forest

temperate rain forest

railcarnoun

a railroad car

raid1 of 2noun

a sudden attack or invasion

raid2 of 2verb

to make a raid on

rahinterjection

hooray—used to cheer a team on

ragweednoun

any of various chiefly North American weedy herbs related to the daisies and producing pollen irritating to the eyes and noses of some persons

ragweed医学词典英英释义

ragweednoun

any of various chiefly North American weedy herbaceous plants comprising the genus Ambrosia and producing highly allergenic pollen responsible for much hay fever and asthma: as

an annual weed (A. artemisiifolia) with finely divided foliage that is common on open or cultivated ground in much of North America

a coarse annual (A. trifida) with some or all of the leaves usually deeply and palmately 3-cleft or 5-cleft called alsogreat ragweed

ragweed 例句

1 Types of allergies: Nasal sprays can help with seasonal allergies to things like pollen, grass, or ragweed, perennial allergies to dust mites or pet dander, and non-allergic rhinitis.

2 “It used to be that tree pollens were only in spring, grasses were just in summer, ragweed was just in fall,” Tummala said.

3 Two are for allergies to specific grass pollens, one is for ragweed allergy and one is for allergy to dust mites.

4 Most of all, its wands of yellow blooms wave like banners during ragweed season.

5 Subjects received six doses of TOLAMBA over six weeks prior to the start of the 2006 ragweed season.

受试者在2006年豕草季节开始之前超过6周时接受6个剂量的TOLAMBA治疗。

6 However, from the regional data, we gained important insights into solutions that would minimize the risk of enrolling a large number of patients who do not have ragweed-specific disease.

然而,从地域性的资料来看,我们获得了重要的启示,其解决方法是将入选大量未曾患过豕草特异性疾病患者的风险降到最小。

7 Everyone has heard of ragweed, but few, I wager, would recognize it if it were sitting outside the door.

8 At six to seven years old more than half of the children were evaluated for their sensitivity to common allergens such as dust mites, ragweed and cats.

到6至7岁时,这835名儿童中,过半的人都有各种各样的过敏症,对常见的过敏原如尘螨,豚草和猫等产生过敏。

9 Just like an allergy to ragweed or dogs, we can't control it.

10 TOLAMBA is designed to target the underlying cause of seasonal allergic rhinitis caused by ragweed.

TOLAMBA是针对由豕草引起的季节性变应性鼻炎的根本原因设计的.

11 Ontological & lustrous, You cast spells on beggars & kings Behind the stone door of Caesar’s tomb Or split trench in a field of ragweed.

12 The following means of making a living are, according to New York City statues, illegal: the skinning of horses or cows, the growing of ragweed, and the burning of bones.

根据纽约自由雕像的宣言,下列谋生方式是不合法的:剥牛皮或马皮,种植豚草以及焚烧尸体。

13 The top three allergens in school age group were dust mites and house dust mites (45.33%), fungus combinations (28.00%), Short ragweed and artemisia (25.33%).

学龄期组,前3位过敏原分别为户及粉尘螨(45.33%)、真菌组合(28.00%)、矮豚草及蒿(25.33%)。

14 It’s fall, which means ragweed is releasing pollen into the air — and people with ragweed allergies are trying to cope.

15 Specifically, the meticulously rendered purslane, creeping Charlie and ragweed are translations of those Assiff observed last year at All Faiths Cemetery in Queens, where the particularly robust overgrowth flourished under negligence.

16 You can find ragweed in nearly every state in the country, Pham said, though it tends to grow in particularly great numbers on the East Coast and in the Midwest.

17 Along the edge of the path is a thicket of weeds: goldenrod, ragweed, asters, burdocks, deadly nightshade, its berries red as valentine candies.

18 WebMD tells users the level of several kinds of irritants: mold, dust, tree pollen, grass and ragweed.

19 But tree pollen also is the primary driver of spring allergy woes (grass is typically the main culprit in the summer, and ragweed and mold in the fall), which means urban planners need to make smart planting choices.

20 They were then able to determine the overall economic costs of healthcare to treat the symptoms and other effects - such as lost work time - of ragweed pollen.

ragweed 同义词

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