1.humanity n.人类；人性

Such a man is a stain to humanity.
这种人是人类的耻辱。

2.relief n.减轻；解除

The pills gave her some relief.
药片减轻她一些痛苦。

3.salicylic a.水杨酸的

Medicated shampoos will help, including zine pyrithione or selenium sulphide, and even stronger shampoos containing tar or salicylic acid.
药物洗发精会有些帮助，如含有锌的硫化铁矿物质或含有硒的硫化物，甚至含有焦油和水杨酸的强力洗发精。

4.prescribe v.开处方；规定

I'll prescribe for you as soon as I get the report.
我拿到报告就给你开处方。

5.observation n.观察；观察力

The patient was kept under observation all night.
这位病人被观察了一整夜。