Ook
abbr. 通断键控；开关键控（On-Off Keying）
🗣️ 情景例句
That's it.
就这样。
Stereo set playing a record
放着唱片的立体声唱机
Yes, I see. How can they get rid of waste water in this way? What a terrible colour the sea is now! It looks as if our class won't be able to bathe at all.
是的，我看见了。他们怎么能这样排放废水呢？海水的颜色多么可怕呀！看来我们班同学根本不能在这里游泳。