青云英语翻译
翻译结果1翻译结果2翻译结果3翻译结果4翻译结果5
[translate] The scientist began a few years ago trying to prove this theory
The scientist began several years ago trying to prove the theory
This scientist several years ago start to attempt to prove this theory
正在翻译,请等待...
The scientist began several years ago trying to prove the theory
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