这一“拇指穿指法”是利用了拇指的特有的两个结构特点；

This TU operation is facilitated by two unique structures of the thumb;

youdao

这一“拇指穿指法”是利用了拇指的特有的两个结构特点；

This TU operation is facilitated by two unique structures of the thumb;

youdao