Nonnegative
a. [数]非负的,正的,零的
🗣️ 情景例句
He'll be back soon.
他很快就回来。
Try to be there by 8:15 the airport will be crowded.
尽量在8点15分以前赶到那里，到时机场会很拥挤的。
It was obvious that he was very embarrassed.
显然他感到很尴尬。