maximum service life的用法和樣例：
例句
- The entire range has special anti-dust air intake filters to guarantee a long operating life.
整個系列有特別的防止抗灰塵吸入的過濾器保證有長的工作壽命。 - A bulb at the connector end provides a reservoir of filling gas which is necessary to give a reasonable working life.
在連接體的末端有一個小球，用以貯存所充的氣體，其目的是為了使計數器具有適當的工作壽命。
