“起重机”造句

高架起重机正吊起一块块巨大的钢板。
Overhead cranes were lifting giant sheets of steel.

材料由那台新起重机吊到楼顶.
Materials are elevated to the top floor by the new hoist.

我们使用起重机将钢琴搬进剧场.
We used a crane to lift the piano into the theatre.