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kimi321金蟲 (小有名氣)
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[求助]
求高手幫忙看這句話有沒有問題,急用,在線等
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| These previous researches encouraged us to develop a facile method for preparation of bromoallenes under metal-free, easy operation, good yield and without toxic halogenating reagent conditions。 |
金蟲 (小有名氣)
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These previous researches encouraged us to develop a facile method for preparation of bromoallenes, with the feathers of metal-free, easy operation, good yield and no "toxic halogenating reagent". 引號中的詞組為不確定詞組。 |
鐵桿木蟲 (職業(yè)作家)
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供參考: These previous researches encouraged us to develop a facile method for preparing bromoallenes under metal-free, easy-to-operate, good-yield and toxic-halogenating-reagent-free conditions. |

銀蟲 (初入文壇)
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