嘱受检者两眼随手指移动，头部不动。按八个方位移动手指。

Ask client to follow movement of finger with eyes, keeping head still. Move finger slowly through each of eight cardinal gazes.

youdao

这里重要的一点是在水下划臂最迅速有力的时候保持你的头部静止不动。

The big deal here is maintaining your head position during the most aggressive part of the underwater pull.

youdao

这来自一个舞蹈和词汇，孤立的能力，也就是说，当肩部移动而头部是不动的，或者跨部运动而肩部不动。

This comes from a dancer's vocabulary, the ability to isolate, say, a shoulder movement from what the head is doing… or hips from the shoulders.

youdao