yán / zhe / jiě / lǐ / fāng / xiàng / qiāo / jī / yán / shí / tōng / cháng / gèng / róng / yì / liè / kāi

沿着解理方向敲击，岩石通常更容易裂开。

A rock is usually easier to split when struck along its cleavage direction.