一个苹果、一把水果刀或苹果去心器、一个搓球机或勺子(任选)。

An apple a paring knife or apple corer a melon baller or spoon (optional).

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如果你不需要整个苹果，那就将苹果切成两半，用搓球机或勺子分别挖掉各半苹果的核。

If you don't need to keep the apple whole, cut the apple in half and remove the core from each half using a melon baller or a spoon.

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