沙克疫苗

例句：

1. 1. The old tree shook violently as a storm passed by.
   暴风雨过后，那棵老树剧烈地摇晃起来。
2. 2. She shook her head and walked away.
   她摇了摇头，走开了。
3. 3. The earthquake shook the ground beneath their feet.
   地震震动了他们脚下的土地。