She saw that old man walking across the street.
他看到那位老人正在过马路。
I saw an old man walking across the bridge slowly.
我看到一位老人在慢慢地过桥。
I saw an old man walking over the street and disappearing into the far side.
我看到一个老头走过街道就消失了。
The car knocked down an old man who was walking on the zebracrossing.
这辆汽车撞倒了一个正在过人行横道线的老人。
The old man seemed to think about something, walking the floor.
那位老人在屋里走来走去，似乎在想着什么事情。
那老人喜欢走路。
The old man stayed healthy by walking an hour every day.
那个老人通过每天步行一小时保持健康。
An old man was walking with a cane.
一位老人在拄着拐走路。
Does the old man need a walking stick?
这位老人需要手仗吗？
Following the old man, the young people started walking slowly.
年轻人跟在老人的后面开始慢慢地走起来。
The old man fell down while he was walking.
当这位老人步行时，摔倒了。
The old man cannot walk without a walking stick.
这位老人没有拐杖不能行走。
I saw an old man being hurt by a bike while walking across the street.
看见一个老先生横过马路被自行车撞了，我急忙跑过去扶他！
The old man is walking up and down the room.
那位老人在房间里来回踱着步。
The old man is walking up and down the room.
那位老人在房间里来回踱着步。
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