life span

名词 n.

英文释义

名词 n.
  1. Alternative spelling of lifespan. alt-of,alternative
    — The working life span of a passenger carriage, on average, is between 30 and 35 years, so a steady replacement takes place quite naturally. The life span of a station, however, cannot be so easily reckoned, for it depends largely on the rehabilitation and upkeep of the existing structures.

词形变化

life spans plural
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