她在鞋带上打了个结防止松开。

She tied a ___knot in her shoelace to keep it from coming undone.

这艘游艇的巡航速度保持在12节左右。

The yacht maintains a cruising speed of about 12 ___knots.

这块木头上有个结，可能会影响切割。

There's a ___knot in this piece of wood that might affect the cutting.

一群孩子围坐在老师身边听故事。

A ___knot of children sat around the teacher listening to a story.

跑完马拉松后，他感到小腿肌肉有个结。

After the marathon, he felt a ___knot in his calf muscle.