1
- a quantity of a medicine or drug taken or recommended to be taken at a particular time（药物的）剂量, 一剂, 一服：
he took a dose of cough mixture.
他吃了一服止咳合剂。
1.1
- an amount of ionizing radiation received or absorbed at one time or over a specified period（一次或一段时间内接受或吸收的电离辐射的）剂量：
a dose of radiation exceeding safety limits.
超过安全限度的辐射剂量。
1.2
- informal a venereal infection〈非正式〉性病; 花柳病。
1.3
- informal a quantity of something regarded as analogous to medicine in being necessary but unpleasant〈非正式〉（像药一样虽苦却必要的事情的）一点, 一份, 一次, 一番：
I wanted to give you a dose of the hell you put me through.
我也要让你也尝一尝你让我经受的痛苦。
with obj.
1- administer a dose to (a person or animal)给（人, 动物）服一剂药：
he dosed himself with vitamins.
他服用了维生素。
1.1
- adulterate or blend (a substance) with another substance在……中掺入（或混入）：
the petrol is dosed with lead.
这种汽油里掺入了铅。
短语
in small doses
- informal when experienced or engaged in a little at a time〈非正式〉一次一丁点地, 少量地：
computer games are great in small doses.
电脑游戏少量玩玩是很好的。
like a dose of salts
- Brit. informal very fast and efficiently〈英, 非正式〉很快地, 一下子：
we'll go through this place like a dose of salts and scrub it from top to bottom.
我们将很快把这个地方从上到下擦洗干净。
ORIGIN: from the use of Epsom salts as an aperient.
词源
late Middle English: from French, via late Latin from Greek dosis 'gift', from didonai 'give'.