Germany on Monday rolled out the world’s first hydrogen-powered train, signalling the start of a push to challenge the might of polluting diesel trains with costlier but more eco-friendly technology.
V [rolled out] 製品投入する
O (the world’s first) hydrogen-powered train 水素で動く電車
V [signalling] the start [of] a push
[to challenge] the might [of] (polluting) diesel trains 汚染する
more eco-friendly technology より環境的テクノロジー