Don't just look on when an accident happened.
事故發(fā)生了不要僅僅旁觀。
Investors can only look on, baffled.
而投資者只能困惑地進(jìn)行旁觀。
he had a worried look on her face.
她一臉擔(dān)憂(yōu)的樣子。
I could tell by the look on her face that something terrible had happened.
從她的臉色我可以看出，發(fā)生了可怕的事情。
There was an amused look on the President's face.
總統(tǒng)面帶愉悅的神情。