To destroy in great numbers as if cutting down, as in battle.
铲除：大批毁灭如切割一般，如在战场上
To overwhelm
战胜
mowed down the opposition with strong arguments.用强有力的论据驳倒对方
mowed down the opposition with strong arguments.
用强有力的论据驳倒对方
kill someone with a fusillade of bullets or other missiles
（用交通工具或枪）杀死，撂倒，扫倒
有付出就有收获。