shells
/ʃel/
名词
（尤指坚果、蛋、某些动物的）壳
the shell of a snail/crab/tortoise
蜗牛／蟹／乌龟的壳
炮弹
Artillery and mortar shells were landing in the outskirts of the city.
大炮和迫击炮弹落在城市周边地区。
赛艇
/ʃel/
动词
剥去…的壳
炮轰，炮击
They were under orders to shell the hospital and the town hall.
他们奉命炮轰医院和市政厅。