strenuous test

例句：

1. 1. The candidate had to undergo a strenuous test in order to pass the exam.
   候选人必须通过一次艰苦的考试才能通过考试。
2. 2. The team faced a strenuous test in the final match.
   团队在最后一场比赛中面临了一次艰苦的考验。
3. 3. The scientist conducted a strenuous test on the new drug.
   科学家对新药进行了一次艰苦的测试。