1.daylight savings time 夏令时

例句：Japan hasn't used daylight savings time since it emerged from U.S. occupation after World War II.

二战结束美军占领日本以后，日本就从未实行过夏令时iPNowRBl.Wl。

2.suffer from 遭受

例句：How long have you been suffering from a headache?

你头痛有多久了?

3.take effect 生效

例句：After you decide which of the three available trace levels you wish to implement, the next thing to consider is when and where you want the tracing to take effect.

在您决定三个要实现可用跟踪等级中的哪一个等级以后，下一件要考虑的事情就是您需要跟踪在何时以及何地生效4F]7;-!M*j0lsJ#6。

4.heart attack 心脏病

例句：Your advisers all say that this will give you a heart attack: not immediately, but in the next decade or so.

你的顾问都表示，这会使你心脏病发作：不会马上发作，但是会在今后十余年内发作^nj2ztdsE*。