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Much of its work, he says, has been unnecessary.
特里亚纳指出，该领域的大部分工作都是毫无必要的。
youdao
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The telephone has been tied up all morning with unnecessary calls.
电话整个上午都被不重要的通话占了线。
youdao
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The telephone has been tied up all morning with unnecessary calls.
电话整个上午都被不重要的通话占了线。
youdao