The snake writhed and hissed.

那蛇蠕动着，发出嘶嘶的声音。

The man moaned, writhed a little, and his face came into the moonlight.

那人呻吟了一声，扭动了一下身子，他的脸露出在月光下。

The man writhed like a trampled snake, and a red foam bubbled from his lips.

那人如一条被踩踏了的蛇一般扭来扭去，嘴里吐出一层血红的泡沫。

He writhed under the insults.

近日他有点苦恼。

The sky writhed with clouds.

天空里乌云滚滚。