Overhead cranes were lifting giant sheets of steel.
高架起重机正吊起一块块巨大的钢材。
Cranes turn overhead as dump trucks and cement mixers nose onto the road.
吊车在头顶转动，翻斗车与混凝土搅拌机在路上小心谨慎地行使。
Overhead, cranes were lifting giant sheets of steel.
头顶上起重机正吊起一块块巨大的钢板。
Insulated overhead crane is a kind of bridge cranes.
绝缘桥式起重机是桥式起重机的一种。
Insulated overhead crane is a kind of bridge cranes.
绝缘桥式起重机是桥式起重机的一种。
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