Life for most people was precarious in those years.
那年月大多数人的日子过得朝不保夕。
The polar explorers took every precaution to minimize the dangers of their trip.
极地探险者十分小心，使旅途的危险性减到最小。
He took the precaution of locking his door when he went out.
当他外出的时候谨慎地锁上门。
National defense must take precedence over all other questions.
国防应优先考虑。
There is no precedent for such a procedure.
这样的程序是没有前例的。
His children are very precious to him.
他的孩子对他来说可是宝贝了。
Time is so precious that you must make full use of it.
时间很宝贵，你必须充分利用它。
He nearly fell off the precipice.
他差一点儿从悬崖上掉下去。
He has precipitated himself into new troubles.
他使自己陷入新的困境中。
He gave the workers precise directives about what to do.
关于做什么, 他给工人们作了明确的指示。
I can't give you a precise date.
我不能告诉你一个确切的日期。
Tell me precisely what do you want?
请明确地告诉我你想要什么？
Our new doctor is much younger than his predecessor.
我们的新医生比他的前任年轻多了。
You can never predict what would happen next.
谁也无法预料接着会发生什么事。
He predicted when war would break out.
他预言战争何时会爆发。
I hate predictable men.
我讨厌可预见的男人。
Man has been predominant over other species for a long time.
人类长久以来一直在支配其他物种。
The book has a preface written by the author.
该书有作者写的序言。
We prefix "Mr. " to a man's family name.
我们在男人的姓前加 "先生".
She is in the seventh month of her pregnancy.
她怀孕七个月了。