backing block

例句：

1. 1. The engineer used a backing block to hold the beam in place.
   工程师使用一个支撑块来固定梁。
2. 2.The car was backed up against the wall by the backing block.
   汽车被支撑块挡住了，靠在墙上。
3. 3.The construction crew had to use a backing block to support the weight of the new building.
   建筑工人不得不使用支撑块来承受新建筑物的重量。