knock over(bump against)，碰倒東西。
stumble over(against)，人被絆倒
trip over，人絆倒。
He tripped over the stool.
when he stumbled out of the
bedroom.
他從臥室跌跌撞撞地跑出來，總被凳子絆倒。
Don't be so emotional.
別太感情用事。
The stool is placed in front of the door, so people often bump
against it when walking by.
凳子放在門口，走路的時候總是磕碰。
It won't work.
這行不通。
Why not?
為什麼不行呢？
Can I ask a favor?
能幫個忙嗎？
I'll back you up.
我會支持你的。
Look out!
Don't knock the stool over.
小心，別把凳子碰倒了！
He knocks over other pots again.
他又碰倒了其他花盆。
He has knocked a cup over again.
他又碰倒了一個杯子。
He stumbled over a stool.
他被一個凳子絆倒。