A.i.d.
[医] 供者人工授精, 异配[人工]授精
🗣️ 情景例句
But it is not polite to ask older people their age.
但问老人的年龄是不礼貌的。
I wish I could, but it's already late.
我是想多呆一会儿，但是时间已经很晚了。
It's about a time when there were black slaves in North America. It's about their fight for freedom.
（它）讲的是有一段时期，北美洲存在黑奴。影片讲述他们为自由而斗争的情况。