他们拾起垃圾。
如果别人看见你拾起垃圾，或是用布质而非塑料制的购物袋，他们也会这样做。
If others see you picking up trash or using a cloth shopping bag rather than a plastic one, they will do the same.
如果别人看见你拾起垃圾，或是用布质而非塑料制的购物袋，他们也会这样做。
If others see you picking up trash or using a cloth shopping bag rather than a plastic one, they will do the same.
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