Someone threw an apple core.

有人扔了一个苹果核。

《柯林斯英汉双解大词典》

He lunches frugally at his desk, typically on yogurt and an apple, which he eats to the core.

他中午就在办公桌旁简单地吃点东西，通常是酸奶和一只苹果，而且他会把苹果吃得只剩果核，一点也不愿浪费。

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After weeks of complaining that an apple core had scratched his throat, my dad was diagnosed with cancer of the oesophagus.

最初父亲抱怨被苹果核划破了喉咙，几个星期后，他就被诊断出患有食道癌。

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