But helium-3 isn't the only resource the moon might have to offer.
但是氦- 3并不是月球能够提供的唯一的资源。
The helium-3 apparently became trapped when the earth was formed.
显然，当地球形成时，氦-3就被圈闭了。
The helium - 3 apparently became trapped when the earth was formed.
显然，当地球形成时，氦-3就被圈闭了。
The helium - 3 apparently became trapped when the earth was formed.
显然，当地球形成时，氦-3就被圈闭了。
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