toe of beam

例句：

1. 1. The engineer carefully measured the toe of the beam before installing it.
   工程师仔细测量了梁的底部，然后才安装。
2. 2. The carpenter was working on the toe of the beam when he heard a noise.
   木匠在梁的底部工作时听到了噪音。
3. 3.The builders were using the toe of the beam as a support for their new project.
   建筑工人正在使用梁的底部作为他们新项目的支撑。