1. 正好,恰好：to a day 一天也不差 | to a turn 正好,恰好 | to begin with 首先,第一

2. 恰好：asbestos filter cloth 石棉滤布 | to a turn 恰好 | holometamorphosis 完全变态

3. 刚好, 恰到好处 精确地, 尽善尽美：the turn of the tide 形势的转变 | to a turn 刚好, 恰到好处 精确地, 尽善尽美 | to the turn of a hair 极其精确, 惟妙惟肖

4. 正好Dddtt,恰好：serve one's turn 合用,管用 | to a turn 正好Dddtt,恰好 | well up in 精通,熟悉,长于