Mtbs
abbr. mean time between services 维修平均间隔时间，平均无维修工作时间; mean time between stops 停机平均间隔时间
🗣️ 情景例句
Bye.
再见。
He is feeling the surface.
他在触摸着表面。
Can't you do anything right?
成事不足，败事有余。