timber groin

例句：

1. 1.The timber groin is a crucial part of the construction.
   木料腹股沟是建筑中至关重要的部分。
2. 2. The engineer carefully measured the timber groin to ensure its stability.
   工程师仔细测量了木料腹股沟，以确保其稳定性。
3. 3.The timber groin was used to reinforce the wall during construction.
   木料腹股沟在建造过程中用于加固墙壁。