Operational life span
[计] 使用寿命
🧩 词语组成解析
life
[laɪf]
n. 生活，生计;生命，性命;一生，寿命;人生，尘世;
span
[spæn]
n. 共轭（马、骡）;跨度，墩距;一段时间;[航] 跨绳;
vt. 缚住或扎牢;跨越时间或空间;以掌测量;以手围绕测量类似测量;
🗣️ 情景例句
Hey, Xiao Li, are you doing anything this weekend?
嘿，小李，这个周末有没有什么事要做？
Flying volcanic bomb
喷燃着的火山弹
Could I drop in at your house after the concert, or would that be too late?
我可不可以在音乐会开完后去你家拜访？那会不会太晚了？