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Smokersreallydotendtobethinnerthantherestofus,andquittingreallydoespackonthepounds,thoughnooneissurewhy.请问这里的packnooneissurewhy(怎么会有这种用法呢)有例句最好了,really

题目详情
Smokers really do tend to be thinner than the rest of us,and quitting really does pack on the pounds,though no one is sure why.
请问这里的 pack no one is sure why(怎么会有这种用法呢)
有例句最好了,
really
▼优质解答
答案和解析
pack on 这里指“增加”
No one is sure why 意为No one is sure why quitting packs on the pounds.