Water shortages do not have to trouble the world — if we start valuing water more than we have in the past.

如果我们开始比过去更加重视水的价值，水资源短缺就不会给世界带来麻烦。

youdao

If a lesson did not interest me, I would take out my notebook and start writing poems in class.

如果我对一节课不感兴趣，我会拿出笔记本，开始在课堂上写诗。

youdao

If a lesson did not interest me, I would take out my notebook and start writing poems in class.

如果我对一节课不感兴趣，我会拿出笔记本，开始在课堂上写诗。

youdao

If the heart does not start beating, continue with chest compressions until help arrives.

VOA: special.2009.08.11

It's not as though we think that if you start opening up the body you'd finally find the particular spot.

但不是我们想的那样,只要打开你的身体,就能在其中找到一个特定的位置

耶鲁公开课 - 死亡课程节选

So, if you're looking for another reason to quit, if you're looking for a reason not to start smoking, here's another good one.

因此，如果你正在寻找戒烟的另一个理由，如果你正在寻找一个不开始吸烟的理由，这就是很好的一个。

麻省理工公开课 - 化学原理课程节选

International rankings were, if not the start, at least a factor in accelerating actors in higher education and research rapprochement policy, and this continues today.

UNESCO: Education

Exercise can help you sleep better at night, but not if you start too close to bedtime.

FORBES: 4 Ways To Sleep Better And Be Thinner

And all bets are off if Europe does not start to grow again.

BBC: Europe after the euphoria