'There's a balance between delivery and removal,' explained Schultz, who has been on the Brown faculty since 1984 and has been studying the Moon since the 1960s.
提供和获取二者是可以保持平衡的。“Schultz解释道，他从60年代就开始研究月球，并于1984年进入了布朗大学。”
'There's a balance between delivery and removal,' explained Schultz, who has been on the Brown faculty since 1984 and has been studying the Moon since the 1960s.
提供和获取二者是可以保持平衡的。“Schultz解释道，他从60年代就开始研究月球，并于1984年进入了布朗大学。”
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