metro

1. N-COUNT Themetro is the subway system in some cities, for example in Washington or Paris. 地鉄

A new metro runs under the square, carrying hundreds of thousands who used to cycle to work. 一條新地鉄在廣場(chǎng)下麪運(yùn)行，載著數(shù)以千計(jì)過(guò)去騎自行車上班的人們。