我们应该竭尽全力保护我们宝贵的淡水资源，因为没有淡水我们无法生存。

We should make every effort to protect our valuable drinking water, for we can't live without it.

youdao

“没有他们的帮助我们无法生存，”董先生说。

"Without their help we could not have survived," says Mr. Dong.

youdao

没有他们我们无法生存的世界。

We can't live world without them.

youdao

We see novel things all the time and if we were not capable of learning and making guesses, educated guesses, about these novel things we would not be able to survive.

我们经常会碰到新事物,如果我们不能学习，不能猜测，不能纠正对新事物猜测,我们就无法生存。

耶鲁公开课 - 心理学导论课程节选