strain fatigue

例句：

1. 1. The heavy workload caused the employees to experience strain fatigue.
   繁重的工作负荷导致员工出现了疲劳。
2. 2. The car's engine strain fatigued after driving for hours.
   汽车的引擎在长时间行驶后出现了疲劳。
3. 3.The athletes were exhausted from their rigorous training and strain fatigue set in.
   运动员们由于严格的训练而感到疲惫，疲劳感开始出现。