警报响起十分钟后，危险解除的信号就响了。
The all clear was sounded about 10 minutes after the alert was given.
你的身体发送给生物钟的第三个信号是温度。
A third cue your body USES to set its internal clock is temperature.
身体调节生物钟的第四个信号是食物。
A fourth cue your body USES to set its internal clock is food.
灯塔一分钟发两次闪光信号。
时间标准是由石英钟和广播标准信号提供的。
The time base was given both by a crystal clock and the broadcast standard signals.
时间标准是由石英钟和广播标准信号提供的。
The time base was given both by a crystal clock and the broadcast standard signals.
应用推荐