A bird in hand is worth two in the bush (一鸟在手胜过二鸟在林 )
Never too old to learn,never too late to turn.亡羊补牢,为时未晚.a apple a day keeps doctor away.（每日一苹果,医生永离开.）
a friend in need is a friend indeed.(患难朋友才是真正的朋友）
Never offer to teach the fish to swim.(不要班门弄斧)
How can you catch tiger cubs without entering the tiger's lair.(不入虎穴,焉得虎子)
Where there is a will,there is a way(有志者事竟成)
