2 sentences for 核 (hé — pit)

1. 这种桃子的核特别硬。

   zhè zhǒng táo​zi de hé tè​bié yìng.

   The pit of this peach is exceptionally hard.

   Source: Dong Chinese Dictionary

2. 这种梅的果实肉厚核小，非常适合用来制作蜜饯。

   zhè zhǒng méi de guǒ​shí ròu hòu hé xiǎo, fēi​cháng shì​hé yòng​lái zhì​zuò mì​jiàn.

   This type of plum has thick flesh and a small pit, making it very suitable for making candied fruit.

   Source: Dong Chinese Dictionary