Definition: the hard seed that is at the centre of some fruits Level: C2
小心别吞下樱桃核。
Be careful not to swallow the cherry ___stone.
桃子的核又大又硬。
The ___stone of a peach is large and hard.
一些水果，比如鳄梨，有一个大的核。
Some fruits, like avocados, have a single large ___stone.
