be about

1 I'm as positive as I can be about it.

我对它有绝对的把握。

2 The Paris talks will mainly be about procedural matters.

巴黎会谈将主要围绕程序上的事宜。

3 I judged him to be about forty.

我估计他40岁上下。

4 I would be about ten when my brother left home.

我哥哥离开家时,我大概十岁左右.

5 She would be about 60 when she died.

她死时也许60岁.

6 I should suppose him to be about fifty.

我猜想他大约50岁.

7 I should suppose him to be about twenty.

我猜他是二十岁左右.

8 Looking still further ahead, by the end of the next century world population is expected to be about ten billion.

再往前看，到下个世纪末世界人口预计将达约100亿。

9 I don't know the exact number of people who have been invited but off the top of my head I should think there will be about forty.

我不知道被邀请者的确切人数,但不用思索,我认为会有40人左右.

10 Toni reckoned that it must be about three o'clock.

托妮估计当时肯定是3点钟左右。

11 Oh, let's see. It'll be about 3:30 before we have anybody free.

哦, 让 我 想想. 大概要到3:30我们才有空.

12 The depth of the crater is expected to be about 30 feet.

弹坑的深度预计约于30英尺.

13 We estimated his income at / to be about 8000 a year.

我们估计他一年的收入大约8000英镑.

14 The savings due to increased health would be about 2 billion annually.

由于增进了健康,每年节约为20亿美元左右.

15 Pisa is believed to be about three thousand years old.

据称比萨大约有三千年的历史.

16 A day is about one thirtieth of a month.

一天大约是一个月的三十分之一。

17 We toured France about three years ago.

我们大约三年前去法国游玩过。

1 从事

assumption pursuit of about set embark have follow practice join attack concern assume pursue occupy work at bite on betake oneself to

2 开始活动

be out and about get the show on the road bring into action come into action

3 正忙于

be at

4 在流行

in