详细解释:n. 还击, 反手击球, 仰泳
vi. 还击, 反手击球, 仰泳
vt. 用反手击
词型变化：
名词:backstroker英语解释：
名词 backstroke:
a swimming stroke that resembles the crawl except the swimmer lies on his or her back动词 backstroke:
swim on one's back例句：
He can swim breaststroke, backstroke and crawl.他会游蛙泳、仰泳和自由泳。