英語短語第八期:up and down
up and down
上上下下，來來回回
He ran up and down the steps several times to get some exercise.
他上上下下的跑了幾回樓梯來做點(diǎn)運(yùn)動。
The bear is walking up and down in the cage.
那只熊在籠子里來回走動著。
up and down
上上下下，來來回回
He ran up and down the steps several times to get some exercise.
他上上下下的跑了幾回樓梯來做點(diǎn)運(yùn)動。
The bear is walking up and down in the cage.
那只熊在籠子里來回走動著。
