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
Hi, Tom, this is Mary.
嗨，汤姆，我是玛丽。
It's hot this afternoon.
今天下午很热。
Fortunately, we could see where we were going。
幸好我们能辨认我们要走的方向。