softening of the cell wall

例句：

1. 1.The meat was gradually softening in the oven.
   肉在烤箱里逐渐变软。
2. 2. The temperature is softening as the sun sets.
   随着太阳落山，温度正在降低。
3. 3.The softness of the fabric is due to its natural fibers.
   布料的柔软度归因于其天然纤维。