earthquake swarms

• 地震群

earthquake swarms的用法和样例：

例句

1. In those regions earthquake swarms have occurred repeatedly in the past.
   这些地区以前曾反复出现过地震群。
2. An earthquake swarm occurred on the border be- tween Greece and Albania.
   希腊和阿尔巴尼亚边界发生地震群。