Primogyn
炔雌醇
🗣️ 情景例句
Bye-bye.
再见。
What's the basis of your belief that the product is safe?
你凭什么相信产品是安全的？
Imagine a railway station, a bus company or a cinema, which many people need to ring to find out the times of trains, buses or films.
想一想，有许多人需要打电话到火车站、汽车公司或电影院，以便弄清火车、汽车的起始时间或电影放映的时间吧。