Rfu
放射免疫聚焦装置（radiommunofocus unit）
🗣️ 情景例句
The village was filled with people--the weather was so nice.
镇上挤满了人--因为天气好的缘故。
You and your big mouth!
你这张快嘴！
Is there a ball under the table?
桌子上有一只球吗？