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difficult to中文什么意思

發(fā)音:   用"difficult to"造句

例句與用法

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  1. it is difficult to obtain reliable evidence .
    這很難取得可靠的憑據(jù)。
  2. the contact resistance is difficult to measure .
    接觸阻力很難測(cè)量。
  3. it 's difficult to ascertain the coal deposits ...
    煤儲(chǔ)量很難探明。
  4. it 's not difficult to see what 's behind it .
    不難明白其中的奧妙。
  5. sundays were difficult to get through .
    每個(gè)星期日都很不容易打發(fā)過(guò)去。

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