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他们认为林奈的系统已经沿用了那么久,改变将是一件很困难的事情。
They say Linneus' system has been used for so long that it would be very difficult to change.
youdao
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他们认为林奈的系统已经沿用了那么久,改变将是一件很困难的事情。
They say Linneus' system has been used for so long that it would be very difficult to change.
youdao