straight tenon

例句：

1. 1. The carpenter used a straight tenon to join the two pieces of wood together.
   木匠用一个直榫将两块木头连接起来。
2. 2.The builder was proud of his ability to use straight tenons for the project.
   建筑工人对他的使用直榫的能力感到自豪。
3. 3.The carpenter had to make several adjustments to the straight tenon before it fit properly.
   木匠在直榫合适之前不得不调整几次。