in luck的用法和樣例：
例句
- I am in luck these days and everything goes well.
這些天我運氣好，一切都進行得很順利。 - He owed his success to luck more than to hard work.
他取得成功靠運氣好多於靠下苦功。
辭彙搭配
- wish someone all the luck in the world 祝某人一切順利...
- play in hard luck 不走運(倒霉...
- one's luck is in 交好運
