这份作业的要求非常明确，每个步骤都写得清清楚楚。

The assignment has ___well-defined requirements with clear instructions for each step.

这份合同中的责任条款有着明确的规定。

The responsibilities in this contract have ___well-defined boundaries.

在几何证明中，所有术语都需要有明确定义。

In geometric proofs, all terms must be ___well-defined to ensure accuracy.