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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Physical geography field practice is an important part in physical geography teaching.

自然地理野外实习是自然地理教学重要的组成部分。

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Physical geography field practice is an important link in physical geography teaching.

自然地理野外实习是自然地理教学的重要环节。

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She was working in an entirely new field of practice.

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Along with that shirtless jog from the practice field in the rain during training camp, of course.

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After thumping Weeraratne for successive fours Cheema then smashed the slow left-armer Jayasuriya over the clubhouse and onto the practice field.

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