12．由于對潛在的困難估計不足，當實驗進展不順時他一籌莫展．（prepare）As he wasn't well prepared for the potential difficulties，he was quite at a loss when the experiment wasn't going on smoothly．．

分析 由于對潛在的困難估計不足，當實驗進展不順時他一籌莫展

解答 答案：As he wasn't well prepared for the potential difficulties，he was quite at a loss when the experiment wasn't going on smoothly．考查漢譯英語．1．be prepared for意為"對…有所準備"；2．go on smoothly意為"順利進行"．

點評 考查漢譯英，準確地理解句子、翻譯句子，然后根據(jù)句意及提示，正確寫出單詞完成句子，使句意更通順．

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