A clear sound, spreads to my ear bank.
一阵清脆的响声,传入我的耳畔。
Now he didn't sharpen it as hard as in the past and nothing was more suitable as a killing weapon. This small dagger in his hand made a clear sound.
他在磨刀时,不用再像以前那样费劲了,而且作为杀死仇人的武器它再合适不过了。
There must be a thunder storm in some place because the picture isn't very sharp and the sound isn't clear.
一定是什么地方有雷雨,因为画面不太清晰,声音也不清楚。
But because the way sound waves operate, we have these low sound waves taking a very long time to clear.
但鉴于声波的传播方式,低声波要过更长的时间才消失
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