[chāi]
[動]
（把合在一起的東西打開） tear open; take apart
disassemble a machine; take a machine apart; strip a machine
拆機器
open a letter
拆信
（拆毀； 拆除） pull down; dismantle; unknit
pull down a house
拆房子
dismantle a bridge
拆橋
strike tents
拆帳篷
unravel an old sweater and reknit it
把舊毛衣拆了重新織一下
It is easier to pull down than to build up.
拆房容易蓋房難。