慢速英语:Brain Imaging Improves Treatment for Depression

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短语讲解：

1. The word “clinical” is added to separate people who are depressed from those who simply feel sad because of life events.

because of 因为
例句：Because of their relative rarity, they are often missed. 
因为相对少见，它们常被漏诊。 

2. Some people who suffer from depression kill themselves.

suffer from 患（某种病），受（某种病痛）折磨
例句：All three panelists suffer from mental illnesses themselves.
这三个小组成员本身就患有精神疾病。

3. And it is difficult to treat -- what may work for one patient suffering from depression may not work for another. 

work for 受雇于; 为…而工作; 效劳
例句：We work for the government.
我们是为政府工作。

4. Whereas in breast cancer, we do tumor markers in order to determine both that a treatment is likely to help you but also determine without a marker that certain treatments are not for you.

in order to 为了…
例句：In order to catch up with in time he run very fast. 
为了及时赶到他跑得很快。