S.d.a.
[医] 特殊动力作用, 右骶前(胎位)
🗣️ 情景例句
You've got the wedding-day jitters!
已经得了婚礼紧张症了！
This is my friend Susan.
这位是我的朋友苏珊。
Do you see that notice? It says No Camping -- in case you can't read!'
你们看到那个布告牌了吗？上面写着‘禁止野营’－－除非你们不识字！”