And the last one is the responsibitity which occurs after the implementing stage.

合同履行完毕后，是后契约阶段。

youdao

Obstructionism is generally most evident at the stage of implementing a law.

蓄意阻挠的事通常在执法阶段最为明显。

《柯林斯英汉双解大词典》

In the implementing test stage, we need to implement the concrete automated scripts or the manual operating procedures according to the test cases.

实现测试阶段要根据测试用例实现具体的自动化脚本或者手工的操作步骤；

youdao

It greatly succeeded in implementing this stage.

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He says Governor Arnold Schwarzenegger's reelection effort took center stage over implementing the best policy for fishermen and the coast.

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