他像一个带着听诊器的医生一样，认真地扣、仔细地听这个葫芦。

Then, bending his ear down over the nearest gourd, which was as high as his gut and wider than a truck tire, he gave it a solid smack and listened intently, like a doctor with a stethoscope.

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本文介绍了采用新结构的压电式地听器的工作原理。

This paper presents the working principle of piezoelectric geophone with modified construction.

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通常情况下，你不断通过听节拍器节奏，但在LMA - 120提供了一个大导体运动显示直观地显示速度以及。

Normally, you keep tempo by listening to the metronome, but the LMA-120 provides a large Conducting Motion Display to visually show the tempo as well.

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