Something that is premature happens earlier than usual or earlier than people expect.
Accidents are still the number one cause of premature death for Americans.
交通事故仍然是美国人过早死亡的首要原因。
His career was brought to a premature end by a succession of knee injuries.
他的职业生涯因连续的膝伤提早结束了。
You can say that something is premature when it happens too early and is therefore inappropriate.
It now seems their optimism was premature.
目前看来,他们的乐观好像还为时过早。
A premature baby is one that was born before the date when it was expected to be born.
Even very young premature babies respond to their mother's presence.
即使很小的早产儿也会对母亲的出现作出反应。