问题描述：
新概念中的选择题：The Hubble is ( ) the earth's atmosphere.
The Hubble is ( ) the earth's atmosphere.
(a)below
(b)over
(c)within
(d)outside
选哪个?道理说明白好吗?
The Hubble is ( ) the earth's atmosphere.
(a)below
(b)over
(c)within
(d)outside
选哪个?道理说明白好吗?
问题解答：
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