她穿的礼服领口很低，露出了明显的乳沟。

Her evening gown had a low neckline that accentuated her ___cleavage.

这项政策在社会中造成了明显的意见分歧。

The policy has created a significant ___cleavage in public opinion.

这块矿物沿着天然的裂理面很容易分开。

This mineral breaks easily along its natural ___cleavage planes.