An apple core is the part of an apple left after the flesh has been eaten.

苹果核是在苹果肉吃完后剩下的部分.

《简明英汉词典》

She ate the entire apple, core and all.

她吃了整个苹果, 果核和全部.

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An apple core is the part of an apple left after the outside has been eaten.

苹果核就是苹果外层吃光后剩下的那一部分.

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