single block

• 单轮车,单阻塞,整块,单轮滑车,单程序段

single block的用法和样例：

例句

1. A light tackle having double or single blocks, used to hoist or tighten rigging.
   轻型滑车双滑轮或单滑轮轻型滑车，用于升起或拉紧支撑船桅和帆的全部绳索
2. The organizations were formed because of people's belief that the city is just too large to care about any single block.
   人们认为这个城市太大难以管理到每一条街道，所以成立了这样的组织。