ultra-fast

形容词 adj.
中文释义

英文释义

形容词 adj.
  1. Alternative form of ultrafast. alt-of,alternative,not-comparable
    — Less important lines of plain double track carrying a mixture of passenger and freight traffic cannot be given ultra-fast expresses, and where alternative routes exist, as for example between London and the West Riding, the specially high-speed trains must be restricted to one of them only.

词源

From ultra- + fast.
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