最好有语法分析.

问题描述:

最好有语法分析.
The
radio waves are measured when the earth is at two points opposite
one another in its orbit.

这句话存有一个较长的时间状语【the earth is at two points opposite one another in its orbit.】
理解了这个状语,相信你一定就能翻译出整句.下面对状语进行拆
①the earth is at two points - "地球在两个点上"
②后面紧跟短语,opposite one another - (方向上你我)"彼此相对",显示它是修饰①的
③之后又有一个小状语修饰,in its orbit - "在它轨道上" ,'它'显然指的是the earth(从语义上、以及就近原则可知'它'不是指向the radio)
--
合并①②③,再融合下中文表达的习惯,以下的翻译较为妥当:
“电磁波/在当地球处于其轨道上两个彼此相对的点时/被测量.”