loosening earthwork

例句：

1. 1. The car's suspension was loosening after thelong drive.
   长途驾驶后，汽车悬挂系统开始松动。
2. 2. Themuscles in his arms werestarting to loosen.
   他的手臂肌肉开始放松。
3. 3. The old man hadbeen sitting for hours, and his backwas beginning to loosen.
   老人已经坐了几个小时，背部开始放松。