要使身体不脱离扶板，你必须保持良好的姿势、体线和平衡。

And you have to have good posture, line and balance to stay on top of the kick boards.

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伸展构造变形导致岩石部分熔融，是熔体线理形成的主要机制。

The main mechanism of melt lineation is extensional deformation which led to partial melting of high-grade metamorphic rock.

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呼吸时头部的上下起伏要控制在最小幅度，同时要保持呼吸前的体线不变。

A breathing position which minimizes the up and down movement of the head and maintains a proper body line.

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Texture in music is the dispositions of the musical lines.

音乐中的织体是曲调线的分布

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How many lines can you hear in this texture?

在这段织体中大家能听到多少条旋律线

耶鲁公开课 - 聆听音乐课程节选