water finding switch

• 找水开关

water finding switch的用法和样例：

例句

1. Water overruns the kettle while boiling.
   水开时从壶里溢了出来。
2. This last step waiting for the water to boil also involves a degree of asynchrony.
   最后一个步骤等待水开的事件意味着一定程度的异步。