在拥挤的公共汽车上，年轻人把座位让给老年人。
In the crowded bus, the young people gave up their seats to the old people.
youdao
在拥挤的地铁或公共汽车上，年轻人总是给老年人让座。
Young people always offer their seats to older people on a crowded subway or bus.
那时我在一辆拥挤的公共汽车上。
I was on a packed bus.
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