As in the first edition, each chapter contains a presentation of its topic in "lecture-book" format together with objectives, an outline, key formulae, practice exercises, and a test.

如同在初版里，每章以“演讲书”形式以及目标包含它的题目的赠送，一个概要，关键公式，实践练习和一次试验。

youdao

All the practice methods and exercises discussed in this book deal mostly with the muscles used to press the key down (flexors).

全部练习的方法和练习在这本书中很多涉及到的都是肌肉怎样按下琴键(屈肌肉)。

youdao

South Korea says the annual exercises with its key ally are defensive.

BBC: North Korea warning as US and S Korea begin joint drill

Several countries also conducted national exercises involving key emergency response agencies, with many conducting tabletop or functional exercises to test their tsunami warning and emergency response Standard Operating Procedures.

UNESCO: EDUCATION