Ship unloader is a kind of port cranes.

卸船机是港口起重机的一种。

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Port Container Stacker is a kind of port cranes.

港口集装箱堆高机是港口起重机的一种。

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It is normally attached to port cranes, deck cranes, ship unloaders and other type of cranes, which are widely used in ports, steel plants, power stations and vessels.

通常配合塔吊、船吊、卸船机等各种类型的起重机使用，广泛应用于码头、钢厂、电厂、船舶等场合。

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Down at the docks in Rotterdam, the largest port in Europe, cranes swing into action, unloading "Edith" - the world's biggest container ship, which has just come into the port.

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From the castle ramparts, look out to sea and you will see the wide expanse of Vasco da Gama beach, spreading out for several kilometres against the backdrop of enormous cranes in the busy port beyond.

BBC: In the footsteps of Vasco da Gama

At 453ft (138m) tall - twice the height of Nelson's column - the cranes arrived at the Thames Gateway port from China.

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