新概念英语第三册 Lesson55(3)

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第三部分 LANGUAGE POINTS
1. This is a major achievement because, in relative terms, planets are very small and old not emit light.
in relative terms: relatively；relative: comparing to other things, 相对的。如：
Since I got a job, I have been living in relative comfort.
In relative terms, Britain was weak in the 20th century. (It was stronger before, but weaker in the 20th century.)
Relatively few people are prepared to sacrifice up to a third of their holidays for the pleasure of traveling on a ship. (NCE3 Lesson44)
2. Finding planets is proving hard enough, but finding life on them will prove infinitely more difficult.
infinitely more difficult: a lot more difficult。我们再来看infinitely的一些用法：
infinitely great: extremely great       infinitely better: much better
Wives tend to believe that their husbands are infinitely resourceful and versatile. 妻子倾向于认为丈夫足智多谋、多才多艺。(NCE3 Lesson46)