2 sentences for 夹心 (jiā​xīn)

1. 这些糕点都是由工人手工夹心的。

   zhè​xiē gāo​diǎn dōu shì yóu gōng​rén shǒu​gōng jiā​xīn de.

   These pastries are all manually filled by workers.

   Source: Dong Chinese Dictionary

2. 这种夹心饼干中间有一层厚厚的奶油。

   zhè zhǒng jiā​xīn bǐng​gān zhōng​jiān yǒu yī céng hòu​hòu de nǎi​yóu.

   This sandwich cookie has a thick layer of cream in the middle.

   Source: Dong Chinese Dictionary