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
You are going to miss her.
你会想念她的。
If I had known her telephone number, I would have called her.
如果我知道她的电话号码，我就给她打电话了。
Could you tell me some more about your market analysis?
请你多告诉我一些你们的市场分析好吗？