重点讲解：
1. under way 进行中的；已开始的；
Consultations are under way.
正在进行磋商。
2. abide by 遵守，遵照（法规、约定等）；
She will abide by her promise.
她将遵守她的诺言。
3. guard against 提防；防范；
Correct mistakes if you have made any and guard against them if you have not.
有则改之，无则加勉。
4. worse off 处于困境的；境况不佳的；
Her father has lost his job and is worse off than ever.
她父亲丢掉了工作，经济情况比以前更糟。