石英钟

例句：

1. 1. The clock on the wall is an old quartz watch.
   墙上的钟是一个旧的石英手表。
2. 2. She bought a new quartz watch for her birthday.
   她生日时买了一块新的石英手表。
3. 3. The quartz movement ensures that the watch keeps accurate time.
   石英机芯确保手表保持准确的时间。