my son is my son till he has got him a wife， but my daughter is my daughter all the days of her life.
儿子婚前是儿子，女儿终生是女儿。
nature is the true law.
天行有常，不为尧存，不为桀亡。
necessity is the mother of invention.
需要是发明的动力。
never fish in trouble water.
不要混水摸鱼。
never judge from appearances.
不可以貌取人。
never say die.
永不言败。
never too old to learn， never too late to turn.
亡羊补牢，为时未晚。
new wine in old bottles.
旧瓶装新酒。
no cross， no crown.
不经历风雨，怎么见彩虹。
no garden without its weeds.
没有不长草的园子。
no living man all things can.
世上没有万事通。
no man can do two things at once.
一心不可二用。
no man is born wise or learned.
没有生而知之者。
no man is content.
人心不足蛇吞象。
