1. The biologist examined the cleavage in the embryo.
生物学家检查了胚胎中的胸部裂隙。
2. The earthquake caused a noticeable cleavage in the ground.
地震在地面上造成了明显的裂缝。
3. She wore a low-cut dress that showed off her cleavage.
她穿着一件低胸裙，露出了她的乳沟。
4. The geologist studied the cleavage planes in the rock formation.
地质学家研究了岩层中的断层面。