Rfu
放射免疫聚焦装置（radiommunofocus unit）
🗣️ 情景例句
Good afternoon, Mrs. Green. I'd like you to meet my girlfriend, Sally.
格林太太，下午好。我想让你认识一下我的女朋友萨里。
I'm not familiar with that part. Let me call someone who is more knowledgeable.
那部分我不熟悉，让我找专业人士来说明。
Excuse me, please! Which is the way to the North Street Hospital?
请问，去北街医院怎么走？