之后在1876年，经过了12天的瓶颈后--当贝尔去华盛顿处理关于他工作上专利的问题时--他突然开始尝试另一种声音的传送器。
Then, after a 12-day gap in 1876—when Bell went to Washington to sort out patent questions about his work—he suddenly began trying another kind of voice transmitter.
风扇连续不断工作发出的声音也会影响你的睡眠，如果你对这种声音很敏感，在你的房间安装一台音乐播放器播放一些音乐可以助你入睡，但你要注意使用音乐带给人的乐趣不要滥用。
The constant noise of a fan might work for you too. Having a music system in your room can be a source of interfering with your ability to fall asleep if you're sensitive to it.[24]
设备工作声音的控制是模拟器开发的重要组成部分。
Controlling equipment's working voice is an important job during developing simulator.
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