有健康开考核，视力和听力考核，还有在格雷夫森德为期25天的驻地训练课程。

There are fitness tests, eyesight and hearing tests and 25 days of residential training courses at the centre in Gravesend.

youdao

This material will be necessary to do the listening exercises for the course, which is sort of the backbone of the course.

做听力练习时我们必须使用这些材料,听力训练是课程的核心内容

耶鲁公开课 - 聆听音乐课程节选