1. sub- => sur- "in the place of, instead of" + rog- "ask for, propose" + -ate.
2. => Etymologically someone who has been "asked for" to take the place of another.
3. => nominate or propose an alternative candidate.
surrogate: [17] A surrogate is etymologically someone who has been ‘asked for’ to take the place of another. The word was borrowed from Latin surrogātus, a later form of subrogātus, the past participle of subrogāre ‘nominate an alternative candidate’. This was a compound verb formed from the prefix sub-, used here in the sense ‘instead of’, and rogāre ‘ask for, propose’ (source of English interrogate, prerogative, etc). => interrogate, prerogative
surrogate (n.)
early 15c., from Latin surrogatus, past participle of surrogare/subrogare "put in another's place, substitute," from assimilated form of sub "in the place of, under" (see sub-) + rogare "to ask, propose" (see rogation). Meaning "woman pregnant with the fertilized egg of another woman" is attested from 1978 (from 1972 of animals; surrogate mother in a psychological sense is from 1971). As an adjective from 1630s.
双语例句
1. Leningrad was the third alien city to offer him a surrogate home.
列宁格勒是他在异地安家的第三个外国城市。
来自柯林斯例句
2. Arms control should not be made into a surrogate for peace.
武器控制不应该用来替代和平。
来自柯林斯例句
3. Martin had become Howard Cosell's surrogate son.
马丁代为当起了霍华德·科塞尔的儿子。
来自柯林斯例句
4. She saw him as a sort of surrogate father.
在她心目中,他仿佛是能替代父亲角色的人。
来自《权威词典》
5. The cat acted as a surrogate mum to the chicks.