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1·The parents tried to smother up his son's crime.

这两个家长想给其儿子掩盖罪行。

2·He attempted to smother up the scandal about his family.

他企图掩饰有关他家庭的丑闻。

3·They raised their pile of dry brush and damp weeds higher and higher, and when they saw the thick cloud begin to roll up and smother the tree, they broke out in a storm of joy clamors.

他们把干柴湿草堆得越来越高；一见那浓烟袅袅而起把那棵树笼罩起来，他们就喜悦欢呼，像一阵狂风暴雨似的。