thin-out of coal seam

例句：

1. 1. The thin-out of the fabric is due to the shrinkage of the fibers.
   布料变薄是由于纤维收缩造成的。
2. 2. The company decided to thin-out its workforce in order to cut costs.
   公司决定裁员以降低成本。
3. 3. The thin-out of the skin caused the fruit to turn yellow.
   皮肤变薄导致水果变黄。