[chāi]
[动]
(把合在一起的东西打开) tear open; take apart
disassemble a machine; take a machine apart; strip a machine
拆机器
open a letter
拆信
(拆毁; 拆除) pull down; dismantle; unknit
pull down a house
拆房子
dismantle a bridge
拆桥
strike tents
拆帐篷
unravel an old sweater and reknit it
把旧毛衣拆了重新织一下
It is easier to pull down than to build up.
拆房容易盖房难。