by all manner of means

1 At all events, we will carry out the plan.

我们无论如何要执行这项计划。

2 You should, by all means, get a copy of the letter.

你无论如何要搞到这封信的副本。

1 一定

sure certain given constant uniform definite determinate invariable apodictic necessarily anytime must be bound to to a certainty by Heavens on conscience upon conscience upon my soul rely upon it be sure to

2 必定

safe cocksure surety of a surety sure as eggs is eggs sure bound guaranteed necessarily surely invariably infallibly must make it a point to V a thousand to one be sure to make a point of