装尖铁

例句：

1. 1. The engineer wasbusy installing the new equipment in the factory.
   工程师忙于在工厂安装新设备。
2. 2. The carpenter was assembling thefurniture for the party.
   木匠正在组装为派对准备的家具。
3. 3. The scientist mounted a telescope to observe the stars.
   科学家安装了一台望远镜来观察星星。