Ook
abbr. 通断键控；开关键控（On-Off Keying）
🗣️ 情景例句
He knows all there is to know,
他无所不知，
What does she mean by canceling her performance?
她取消自己的演出是什么意思？
Then he gets out of the lift and climbs up to the fifteenth floor on foot.
接着他走出电梯并徒步登上第15层。