vt.

1. 排出（液體）；使流出[（+away/off/out）]
   Ditches were dug to drain water from the swamp.

   挖渠排掉沼澤的水。

2. 排掉（土地，容器等的）水；曬乾[（+off/of）]
3. 喝乾
   He drained a bottle of beer.

   他喝光一瓶啤酒。

4. 耗盡[（+of）]
   The civil war drained the country of its manpower and wealth.

   內戰耗盡了國家的人力和財富。

vi.

1. （水等）流掉，漸漸枯竭[（+away/off/out）]
   Luckily the water drained away in time.

   幸好水及時排掉了。

2. （土地）排水；（衣服等）滴乾
   Put the raincoat on the balustrade to drain.

   把雨衣放在欄杆上去滴乾。

n.

1. 排水管[C]
   The bathtub drain needs repairing.

   浴盆的排水管需要修理。

2. 排水設備[P]
3. 排水，流出[U]
4. 消耗，負擔[C][（+on）]
   The cost of his children's education was a great drain on his money.

   他孩子的教育費用造成他極大的負擔。

5. （財富等的）不斷外流，逐漸流光[U][S1]
   What he has spent is a drain on the savings of his parents.

   他所花費的會耗盡他父母的積蓄。

v.

1. cause the liquid in (something) to run out, leaving it empty or dry.
   ▸(of liquid) run off or out.
   ▸(of a river) carry off the superfluous water from (an area).
   ▸become dry as liquid runs off.
   ▸drink the entire contents of.
2. deprive of strength or vitality.
   ▸cause (a resource) to be used up.

n.

1. a channel or pipe that carries off rainwater or liquid waste.
   ▸Brit. a grating set in the ground over the opening of a drain.
2. a thing that uses up a resource.
   ▸the continuous loss of a resource:

   the drain of talented staff.