thickness drag

例句：

1. 1. The car has a thicknessof 20 centimeters.
   这辆车的厚度是20厘米。
2. 2. Thewall is thick enough to block out thenoise.
   墙足够厚，可以隔音。
3. 3. Thebook's thickness makes it difficult toread.
   这本书的厚度使得阅读变得困难。