试题题干
Translate the following sentence into Chinese.
If there were only one planet like the earth for every ten yellow stars, that alone makes 100 million worlds comparable to ours -- just in our galaxy!
参考答案
试题解析
考点：planet行星；one···for every ten··· 每十个·····中的一个·····；comparable 类似的； galaxy星系。
句子结构：If 引导条件状语从句，主句为that alone makes 100 million worlds comparable to ours。