| 1. | It must be very difficult at sea, too .
海上的日子想必也很不好过吧。
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| 2. | Doing so may be difficult in practice .
在实践中这样做可能会有困难。
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| 3. | It is difficult to obtain reliable evidence .
这很难取得可靠的凭据。
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| 4. | The contact resistance is difficult to measure .
接触阻力很难测量。
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| 5. | The book is too difficult for me to read .
这本书太艰深，我读不下去。
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| 6. | It 's difficult to ascertain the coal deposits ...
煤储量很难探明。
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| 7. | She considered berenice a little difficult .
她认为白丽莱茜有点难弄。
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| 8. | It 's not difficult to see what 's behind it .
不难明白其中的奥妙。
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| 9. | They are making her life difficult or dangerous .
他们逼得她走投无路。
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| 10. | She is a difficult person to pin down .
她这人行事、说话没个准儿。
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