Teach kids to use an alarm clock.

教孩子使用闹钟。

We will actually build an alarm clock.

我们将实际构建一个闹钟。

An alarm clock broke.

一台闹钟坏了。

Now we don't need an alarm clock to get up.

如今，我们起床不需要闹钟叫。

90% of us use an alarm clock to wake up in the morning.

90%的人早上需要闹钟才能起床。