And then, when all of us were safely on board, there was a blast of martial-style music as the guards on the platform gave a final cheer and a wave and the train slowly pulled away.

然后，当所有乘客安全上了车，军乐般的音乐奏起，站台上的卫兵向列车最后挥手致意，火车慢慢开动了。

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In field practice, a subsurface is mapped by arranging a series of wave-train sources, such as small dynamite explosions, in a grid pattern…

第二句话对解释进行总的说明：“在实地作业中，通过将一系列波列源，诸如小规模炸药爆炸，排列成一个网格模式，从而将地下层面标绘出来。” 接下来是“地震反射法”的详细过程。

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To decrease the effect of compression wave, the numerical simulation of a three-dimensional viscous flow induced by a high-speed train entering tunnels with a shaft was made.

为了降低噪声的影响，对高速列车穿越带有竖井的隧道时产生的压缩波进行了三维粘性流场数值模拟。

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Additionally, a less active African tropical wave train is possible as a result of the disruption of the Asian subcontinent monsoon.

FORBES: Damaging Hurricanes Could Impact Energy, Insurance Industries In 2012

Pulling out of the station past the back yards of a multitude of Cairene families, our children watch in wonder as local kids play football beside the tracks, bathe in muddy rivulets, fly kites from the roofs of their homes and wave at the passing train.

BBC: Travel with children: The night train to Luxor