keep back例句

She was unable to keep back her tears, and wept freely.
她抑制不住泪水, 痛痛快快地哭了起来.

A slow learner can keep back the whole class.
反应迟钝的学生会影响全班的进步.

I asked the spectators to keep back from the sideline.
我要求观众们不要走近边线.