单词rock-bound
adj.: 岩包围着的网络: 多岩的;被岩石包围的
〔矿〕被岩石包围的,多岩的
岩包围着的,岩多的
Macadam "-type bases involving successive layers of crushed rock bound with rock dust were also used. "
人们曾经使用“石结”基层——几层由石粉黏结在一起连续的碎石层。