经济学人 - 柯帕斯英语网

经济学人

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1806浏览

but的句子里怎么没有主语

柳明君 2022-01-12 16:47:23

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1480浏览

英语难句分析

VVilea 2021-04-09 14:37:20

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They kept these animals in a laboratory for a year, to acclimatise them, and then challenged them with various tasks which, if performed successfully, would yield a reward of food.

阿喀琉斯之踵 2021-02-16 23:17:29