belays

v.

把绳索拴在系绳栓上（belay的第三人称单数形式）；

1. I took a climbing class once and learned how to belay and tie knots, but I've never seen anything like this.
   我上过一次攀岩课，学会怎么做制绳和绑绳结，但是我没看过像这样的。

1. The belay consists of anchor, friction, and position.
   固定保护绳包括锚点、摩擦力和位置。

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