短语词组短語tread d water 踩水to tread water 踩水You tread water 你踩水Performance tread water 學習成勣止步不前Beasts Tread Water 野獸踩食tread water lift wheel 腳踏水車Jump in and tread water 跳水竝能在深水中;跳水竝能在深水中踩水 返回 tread water