免费av毛片,日韩av高清在线播放,97国产精品最好的产品,欧美成人免费一区二区三区,神马午夜一区,曰河南少妇对白视频,欧美自拍视频

文字稿:

One day, this could be the world's fastest train.

Using magnets to float above the track, the maglev can reach speeds of over 500 kilometres per hour (500km/h).

Ministers in Japan have called it "world-class" technology.

The venture cost billions of US dollars, though some hope the technology could be sold to overseas markets.

But don't turn up at the station any time soon. The train isn't expected to open its doors to passengers until 2027.

Vocabulary 詞匯:

magnets 磁鐵

world-class 世界一流的

venture 風(fēng)險(xiǎn)項(xiàng)目

overseas 海外的，其他國家

turn up 前去，抵達(dá)