Just remember to smile as you say hello. A small wave is also polite.
只要记住说你好的时候带上微笑就行了，另外轻轻招手也会显得很礼貌。
Experimental results show that vertical perforated structure have the advantages of small wave pressures and good effect of energy dissipation.
试验结果表明，开孔直立结构具有波压力小、消能效果好的优点。
Based on the mechanics of wave, the expression of water wave propagation velocity under the action of gravity is deduced and the effect of surface tension on small wave is analyzed.
本文根据波动理论推导出在重力作用下波的传播速度表达式，分析了微小波动中表面张力的作用。
Although not even a silent wind blew, and not even a small wave was seen on the sea, the booming was so mighty, that my heart threatened to stop beating.
虽然没有一丝微风，海面也没有一点波浪，但那轰隆声却如此巨大，以致我的心脏快承受不住，要停止跳动了。
Although not even a silent wind blew, and not even a small wave was seen on the sea, the booming was so mighty, that my heart threatened to stop beating.
虽然没有一丝微风，海面也没有一点波浪，但那轰隆声却如此巨大，以致我的心脏快承受不住，要停止跳动了。
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