heads-up是什么意思

中文翻译与英英解释

adj.
〔美国〕(做事)有信心并且干得很好的。
adj.
〔美口〕机灵的，足智多谋的，随机应变的。

a warning message; "he sent a heads-up to the District Attorney"

fully alert and watchful; "played heads-up ball"
同义词：wide-awake,