问题描述：
英文单词问题（书52）
Do you know how Mautner got soil from Mars?He made it by cutting up two Martian meteorites chunks of rock.They had landed on Earth from the Red Planet.Not many meteorites chunks came from Mars,but Mautner was able to confirm that his did..（这里的his 和did 如何译?请指教!）劳驾!
Do you know how Mautner got soil from Mars?He made it by cutting up two Martian meteorites chunks of rock.They had landed on Earth from the Red Planet.Not many meteorites chunks came from Mars,but Mautner was able to confirm that his did..（这里的his 和did 如何译?请指教!）劳驾!
问题解答：
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