testing

1. ADJ A testing problem or situation is very difficult to deal with and shows a lot about the character of the person who is dealing with it. 考验人的

The most testing time is undoubtedly in the early months of your return to work. 最考验人的时候无疑是在你重返工作岗位的头几个月。

2. N-UNCOUNT Testing is the activity of testing something or someone in order to find out information. 检测

...product testing and labelling. …产品的检测与标贴。