Rfu
放射免疫聚焦装置（radiommunofocus unit）
🗣️ 情景例句
She was caught in the branches of our tree.
被我们家树上的树枝夹住了。
A colt you may break,but an old horse you never can.
小驹犹可练，老马最难驯。
Sorry. I wasn't thinking.
抱歉，我没有想到这点。