1、He felt a sudden sense of calm, of contentment.

他突然感到一种安宁和满足。

2、Then something seemed to snap in me. I couldn't endure any more.

这时候，我的心里像有个东西突然绷断了——我再也忍受不了啦。

3、If these drugs are stopped abruptly then some withdrawal symptoms may occur.

如果突然停服这些药，则可能出现一些戒断症状。

4、Family values are suddenly the name of the game.

家庭价值观突然变得重要起来。

5、He was struck by a stabbing pain in his midriff.

他突然感到腹部一阵剧烈疼痛。