Mammogenesis
乳腺发育
🗣️ 情景例句
Please hold on a moment.
请等会儿。
When did you get married?
你什么时候结婚的？
a flight attendant told us to keep calm and to get off the plane quietly as soon as it had touched down.
一位空中乘务员告诉我们要保持镇静，待飞机一着陆，就马上不声不响地离开飞机。