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 20^th century. (It was stronger before, but weaker in the 20^th 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)新概念英语课文