Sound off in the comments if you would pick one up.

如果你也想要的话，就在评论里吱一声吧。

Well the obvious way to measure the speed of sound is to bounce sound off something and look at the echo.

测量音速最简单的方法就是让声波反弹然后测量回声的时间。

Well the obvious way to measure the speed of sound is to bounce sound off something and look at the echo .

测量音速最简单的方法就是让声波反弹然后测量回声的时间。

You can turn your sound off and put the phone away, like in your pocket.

你可以把手机静音，然后放到一边，可以放到衣服口袋里。

Watch them together with the sound off, so you can get information and a turn-on at the same time.

把声音关掉，一起观看这些片子，你们仍可以看到要点与此同时也会兴奋起来。

But if social media lets everyone sound off, it also makes it much easier to circle the wagons in response.

但如果说社交媒体让所有人都有了畅所欲言的机会，那么它让大家万众一心，抵制某些行为也变得更容易了。

But then one day his new neighbor to allow him to sound off smaller because of his children could not sleep.

可是有一天他的新邻居让他把声音关小些因为他的小孩睡不着觉。

But why must roosters crow as they prepare to start their day, and why do some roosters sound off before dawn?

但是，为什么公鸡会打鸣，而且这一时间点是在黎明前呢？

They think there’s a metabolic link, because energy use affects the nerves and muscles that animals use to sound off.

科学家认为叫声与体温体积之间存在着某种新陈代谢上的联系，因为它们用力发出声音时会牵动发声神经和肌肉。

Most American politicians say they support marriage, but few do much about it, except perhaps to sound off about the illusory threat to it from gays.

美国大多数政界人物都说他们支持结婚，但却鲜有作为，除了当他们神侃同性恋对婚姻的威胁时。