The dent is not big enough to be worth hammering out, we can fill it in.
这凹坑太小，不值得费事碾平，我们把它填上就可以了。
The boat pitches up and down and rolls from side to side in the heavy swell. The noise of the big diesel motor, just below the floor, is hammering at my head.
小船在滚滚巨浪中上下左右颠簸，我的大脑被甲板上那大型柴油发动机产生的噪音所困扰着。
That dent is not big enough to be worth hammering out.
那个凹陷不大，用不着把它锤平。
The disc's shutoff stroke is very short and under the effect of the spring, the valve can close quickly and prevent the big noise from water-hammering.
由于阀瓣的关闭行程缩短及弹簧作用可加速关闭效果，减少水锤及水击声。
The disc's shutoff stroke is very short and under the effect of the spring, the valve can close quickly and prevent the big noise from water-hammering.
由于阀瓣的关闭行程缩短及弹簧作用可加速关闭效果，减少水锤及水击声。
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