They're they're testing the, the gantry cranes.

他们正在测试龙门起重机。

Among them, a flying car, a large gantry milling machine, a coin-sized pacemaker and a robot that played pingpong with humans.

其中有会飞的汽车、巨型龙门铣、硬币大小的心脏起搏器、会与人协作的机器人等等。

RTGs or rubber tyred gantries are enormous cranes that move boxes around the port.

RTG 或橡胶轮胎龙门架是在港口周围移动箱子的巨大起重机。