Life-expectancy
[医]寿命（预期寿命）
🧩 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;
🗣️ 情景例句
Don't worry, Richard.
别担心， Richard。
He's not feeling very well today.
今天他觉得不舒服。
I usually come by bus. What about you?
我平常乘公共汽车。你呢？