1. 深渊
An abyss is a very deep hole in the ground.
2. 险恶的境地
If someone is on the edge or brink of an abyss, they are about to enter into a very frightening or threatening situation.
e.g. He felt he was on the edge of an abyss; one false move and he was done for...
他觉得如临深渊,一步不慎便会永劫不复。
e.g. The country was on the brink of an abyss.
国家岌岌可危。
3. 极大的差异;鸿沟
A very great difference between two people, things, or groups can be referred to as an abyss .
e.g. How big is the abyss between what you think you are and what you actually are?
你对自己的认识和真实的你之间差别到底有多大?