keep an eye open for的用法和樣例：
例句
用作動(dòng)詞 (v.)
- He asked his broker to keep a weather eye open for any significant change in the price of gold as he was considering another purchase.
他請他的經(jīng)紀人嚴密注視黃金價(jià)格的重大變化，因為他正考慮再購進(jìn)一批。 - Look out for symptoms of depression.
留心看有無(wú)抑郁癥狀。 - She kept an eye on the kids when they were playing in the playground.
孩子們在操場(chǎng)上玩的時(shí)候，她仍然留心看著(zhù)他們。
