af·ter·shock
noun/ˈɑːftəʃɒk/
/ˈæftərʃɑːk/
- a small earthquake that happens after a bigger one
（地震后的）余震 - The area suffered a series of aftershocks measuring up to 6.3 on the Richter scale.
该地区遭受了一系列里氏6.3级余震。
- The area suffered a series of aftershocks measuring up to 6.3 on the Richter scale.