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”Theyservethepurposeofchanginghydrogenintobreathableoxygen,”“Andthey’reasnecessary
题目详情
”They serve the purpose of changing hydrogen into breathable oxygen,” “And they’re as necessary
▼优质解答
答案和解析
他们的作用就是把氢气转化为可呼吸的氧气.
并且他们很有必要.
并且他们很有必要.
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