Expectation of life
[医] 预期寿命\\n[经] 寿命期望数
🧩 词语组成解析
of
[əv]
prep. 关于;属于…的;由…制成;
aux. 助动词 [非标准用语、方言] =have [主用于虚拟语气];
life
[laɪf]
n. 生活，生计;生命，性命;一生，寿命;人生，尘世;
🗣️ 情景例句
She wears too much make-up.
她妆化得很浓。
Why aren't you happy?
为什么无聊呢？
To our dismay, we saw that there were snails everywhere:
让人沮丧的是，我们发现到处都是蜗牛：