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earth's core [英] [ɜ:(r)θs kɔ:] [美] [ɝθs kɔr] [短语] 地核 词频排名 34525/55435 学习人数 72 难度等级 3/10 认知比例 74.07% 例句 The earth's core is generally believed to consist of nickel and iron. 一般认为地核是由镍和铁构成的。 One possibility is that the earth's core is a single crystal of iron. 地核是一块单一铁水晶是一种可能性。 助记 谐音 地核的外面是辽阔(corn)的世界
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