Knu
abbr. knuckle 关节，钩爪
🗣️ 情景例句
Richard, did you go to the aerobics class, really? Richard
你真的上了有氧运动课吗？
He likes playing the piano.
他喜欢弹钢琴。
the message to its home planet is barely halfway there.
那么这个信号在发回到原来的行星途中刚刚走了一半路程。