keel over

• • (使)倾履，(使)翻转：

    The ship keeled over in the storm and sank to the bottom of the sea.

    船在暴风雨中翻了，沉到海底。

  • 晕倒；跌倒；摔倒：

    Several students keeled over from the heat.

    几名学生因天气太热而晕倒了。

    Hearing the joke, she keeled over with laughter.

    听了这个笑话，她笑得前仰后合。