exhaust和drain的区别

你问的是在他们都表示“耗尽”的情况下?
如果是这个问题,两个单词在意思上没有区别,唯一的不同,就是exhaust及物,直接加宾语；drain不及物,加of+宾语.
exhaust完整的意思：
及物动词 vt.
1.抽完,汲干;把...的内容抽空[(+from/of)]
2.用完,耗尽
He had exhausted his supply of water.
他已耗尽了全部供水.
3.使精疲力尽[H]
My father is completely exhausted.
我父亲精疲力竭.
The marathon talks exhausted him completely.
马拉松式的谈判使他精疲力竭.
4.详尽研究;详尽论述
Her book on child-care exhausts the subject.
她那本关于儿童保育的书写得详尽透彻.
不及物动词 vi.
1.排出气体
The engine exhausts through the muffler.
引擎通过消音器排气.
2.(气体等)被排出
名词 n.
1.排出;排气(或水等)[U]
Something has gone wrong with the car's exhaust system.
汽车的排气系统出了故障.
2.排出的气[U]
Effective measures have been taken to prevent exhaust pollution.
业已采取有效措施以防止废气污染.
3.排气管;排气装置[C]
drain：
及物动词 vt.
1.排出(液体);使流出[(+away/off/out)]
Ditches were dug to drain water from the swamp.
挖渠排掉沼泽的水.
2.排掉(土地,容器等的)水;晒干[(+off/of)]
3.喝干
He drained a bottle of beer.
他喝光一瓶啤酒.
4.耗尽[(+of)]
The civil war drained the country of its manpower and wealth.
内战耗尽了国家的人力和财富.
不及物动词 vi.
1.(水等)流掉,渐渐枯竭[(+away/off/out)]
Luckily the water drained away in time.
幸好水及时排掉了.
2.(土地)排水;(衣服等)滴干
Put the raincoat on the balustrade to drain.
把雨衣放在栏杆上去滴干.
名词 n.
1.排水管,下水道[C]
The bathtub drain needs repairing.
浴盆的下水道需要修理.
2.排水设备[P]
3.排水,流出[U]
The cost of his children's education was a great drain on his money.
他孩子的教育费用使他耗费极大.
4.消耗,负担[C][(+on)]
What he has spent is a drain on the savings of his parents.
他所花费的会耗尽他父母的积蓄.
5.(财富等的)不断外流,逐渐流光[U][S1]我没有看到前面的句子，所以不知道them指代的对象。如果them是泛指一个很宽广的概念，那么这两个词并列起来的原因可能就是：drain偏向于耗尽财富或者物质方面的东西，而exhaust偏向于耗尽精力等精神方面的东西。但很少有抠这么细的时候。。。。我很好奇lz你看的都是神马BT东西哇。。。ETS哇？？？另外，在英语里，and是一个神奇的用法，它可能连接两个意思完全相同的词语，只是为了表达的更充实一点。没有区别。them指代friends，就是说尽管他们在情感上和精神上都筋疲力尽。