noun
paying close attention to a situation, in case sth happens
他始终密切关注商机。 He's always on the qui vive for a business opportunity.
数据来源：WordNet
He 's always on the qui vive for a business opportunity .
他始终密切关注商机。
Lee has an extraordinary talent for qui vive watchfulness in close-ups .
在对于特写镜头的警觉上，李安有一种非凡的天份。
n.
on the qui vive
密切注意着；警惕 paying close attention to a situation, in case sth happens
He's always on the qui vive for a business opportunity.
qui vivequi vivequi vive