high grade block

例句：

1. 1.This high-grade block is suitable for building tall buildings.
   这种高级块状物适用于建造高楼。
2. 2.The engineer used this high-grade block to reinforce the foundation of the bridge.
   工程师使用这种高级块状物来加固桥梁的基础。
3. 3. The construction company uses high-grade blocks to build modern office buildings.
   建筑公司使用高级块状物来建造现代办公楼。