n.

1. 痉挛，抽搐[U][C]
   If breathing is not restored, the patient may go into spasm.

   如果病人的呼吸得不到恢复，就有可能发生痉挛。

2. （动作、感情等的）一阵发作[C][（+of）]
   a spasm of coughing

   一阵咳嗽

n.

1. a sudden involuntary muscular contraction or convulsive movement.
2. a sudden brief spell of activity or sensation.