alert, smart, and quick to react
机警、聪明并且反应迅速 (jijing congming bingqie fanying xunsu)
"You need to be on the ball to handle this job."
"你需要非常机警才能处理这份工作。" (ni xuyao feichang jijing caineng chuli zhefen gongzuo)
to make a decision immediately
to counteract or cancel the effect of something
Working, often with a strict time limit or deadline.
to become difficult to control
to achieve higher positions in career or life
a situation in which virtue is rewarded and vice is punished...