Norgestimate
[医]诺孕酯：一种孕激素，分子式为C23H31NO3
🗣️ 情景例句
If you don't know a person's last name, use 'ma'am' or 'sir'.
如果你不知道一人的姓， 你应称呼他为 'ma'am' 或 'sir' 。
A man is known by the company he keeps.
察其友知其人。
Life on a desert island is wretched.
认为荒岛生活很可怕，