Tetrads
四色相(等间隔)配色
🗣️ 情景例句
I see. What time will she come back?
哦，那她几点会回来？
In secondary school, children study mathmatic、phsicas and chemistry.
中学的小孩会读到数学、物理和化学。
When you think of the innumerable birds that one sees flying bout,
你可以想象出天上有看得见的飞来飞去、数不清的鸟，