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birdhouse的复数形式为：birdhouses...
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n.产气，产气作用...
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You can pay to be upgraded to a business class seat.你可以付费升级到商务舱。Helicopters have been upgraded and modernized.直升机已经更新换代，装配了现代化设备。They upgraded the land by improving it with new buildings.他们建造新楼房来提高土地的等级....
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bur的音标：bur的英式发音音标为：[bə:]bur的美式发音音标为：[bɚ]...
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adj.大的...
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free of的音标：free of的英式发音音标为：[fri: ɔv]free of的美式发音音标为：[fri ʌv]...
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There are many amino acids that the body cannot synthesise itself.有许多种氨基酸人体自身不能合成.There are many amino acids that the body cannot synthesize itself.有许多种氨基酸人体自身不能合成。Alanine appears to be the preferred amino acid in the tr...
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Absence sharpens love, presence strengthens it.相聚爱益切,离别情更深...the new constitution, which strengthens the government and enables it to balance and check the powers of parliament and president...巩固了政府的地位并使其能够制衡国会和总统权力的新宪法S...
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coalfield的音标：coalfield的英式发音音标为：['kəʊlfi:ld]coalfield的美式发音音标为：['koʊlfild]...
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土壤中的养分除氮外, 最初的来源都是母岩.The nutrient in soil divides nitrogen outside, prime source is Mu Yan.另外,还简略介绍了生物除氮磷的基础理论.It also summarizes basic principles on biological nitrogen and phosphorous asas some new significant views....
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bufotalein的音标：bufotalein的英式发音音标为：[bʌfəʊ'teɪlɪn]bufotalein的美式发音音标为：[bʌfoʊ'teɪlɪn]...
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“贤人”的英语可以翻译为：a person of virtue，worthy，solon，wisdom ...
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同功凝固酶...
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currentlimiter的音标：currentlimiter的英式发音音标为：[kʌrənt'lɪmɪtər]currentlimiter的美式发音音标为：[kʌrənt'lɪmɪtər]...