Levonorgestrel
[医]乙羟基二降孕甾烯炔酮, 左旋-18-甲基炔诺孕酮
🗣️ 情景例句
It's going to be hard, but give it your best shot.
事情会很难，你尽力而为就是了。
Do you have the tickets, or not?
你到底有没有买票？
Where do you live?
你住哪儿？