这个机制将根据灾害的严重程度（如超过一定速度的风）启动。

The mechanism will be triggered by the intensity of the event (e.g., winds exceeding a certain speed).

youdao

利用气体放电产生的等离子体朗缪尔流效应来使敏感元件产生一定速度的运动，不需另外的驱动元件。

Plasma Langmuir flow effect produced by gas discharge was used to make sensitive component move at a certain velocity without further drive part.

youdao

飞机得在达到一定的速度以后，才能有足够的提升力从地面起飞。

An aeroplane has to reach a certain speed before there is enough lift to get it off the ground.

《柯林斯英汉双解大词典》

And we turned to a discussion of the unpredictability of death, -- the fact that because we don't know-- we can't predict--how much more time we've got, we may, as it were, pace ourselves incorrectly.

我们转而讨论死亡的不可预测性，因为我们不知道-,我们不能预测--我们还有多少时间，我们可能，可以说是，为自己定错了前进的速度。

耶鲁公开课 - 死亡课程节选