ridge-mounting timber

例句：

1. 1. The construction of thisbridge required the use of ridge-mounting timber to support its weight.
   建造这座桥需要使用山脊支撑的木材来支撑其重量。
2. 2. The engineers used ridge-mounted timber to reinforce thefoundation of the building.
   工程师们使用了山脊支撑的木材来加固建筑物的基础。
3. 3.The ridge-mounted timber wascarefully selected to ensure its durability and strength.
   精心挑选的山脊支撑的木材以确保其耐用性和强度。