They froze as usual when they heard the second sound.
而听到第二种声音的时候还是会害怕。
Their second sound piece of advice is that philanthropists should work together more often.
另一个建议是慈善家要多进行合作，这个建议似乎都不用提，但是，书中问道，“为什么不能用更多的基金积极地与同行进行协作呢？”
The sound reflected back in one tenth of a second.
声音在十分之一秒以后反射回来。
Second, sound capital is the basis of sound banking.
其次，健全的资本是健全的银行的基础。
Light travels faster than sound at the speed of 300,000 kilometres per second.
光速比声速要快，为每秒钟30万公里。
Second, developing the sound transmission loss measuring system.
第二，声学材料隔声量测量系统的构建及测量。
When you're doing business in a second language, it's easy to sound unsure.
当你用第二语言做面试时，很容易语气听起来很不确定。
He thought in a second, and willed. Let me down safe and sound.
“他想了一会儿，又说，”让我平安落地吧。
Sound travels at 1100 feet per second in air.
声音在空气中以每秒1100英尺的速度传播。
Sound travels at 1100 feet per second in air.
声音在空气中以每秒1100英尺的速度传播。
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