研究人员已
Researchers have
以上为机器翻译结果，长、整句建议使用 人工翻译 。
研究人员已发现了17世纪的文件。
Researchers have unearthed documents from the 1600s.
《柯林斯英汉双解大词典》
一些研究人员已开始这样做了。
Some researchers are starting to do just that.
youdao
研究人员已解释戒烟后发福的各种潜在的原因。
Researchers have pointed to various potential reasons for the weight gain that often follows smoking cessation.
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