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
When I first graduated from college.
那时我刚从大学毕业。
The lion is known by his claws (paw).
狮以爪闻名。
Broadly speaking, human beings may be divided into three classes: those who are toiled to death,
劳累至死的人、