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
I see. Well, the idea of buying a house is exciting.
我明白了。嗯 买房子的念头叫人兴奋过头。
You saw that movie, didn't you? Was it interesting?
你看过这部电影了吧？精彩吗？
I would like to ask you a favor.
我可以提出一个要求吗？