Narf
abbr. natural axial-resonant frequency 自然轴向共振频率
🗣️ 情景例句
anyway.
不管怎么说。
You should wear a raincoat, It's rainy today.
你应该穿一件雨衣，因为今天下雨。
As long ago as the fourteenth century,
早在14世纪，