The entire range has special anti-dust air intake filters to guarantee a long operating life. 整个系列有特别的防止抗灰尘吸入的过滤器保证有长的工作寿命。
A bulb at the connector end provides a reservoir of filling gas which is necessary to give a reasonable working life. 在连接体的末端有一个小球，用以贮存所充的气体，其目的是为了使计数器具有适当的工作寿命。
The machine's life is very long. 这机器使用寿命很长。
Brand new bearing prolongs the service life. 全新轴承，增加使用寿命。
The disk space required by a snapshot depends on how many different pages in the source database are updated during the life of the snapshot. 快照所需的磁盘空间取决于在快照使用期限内源数据库中更新的不同页的数量。
