Gecs
[计]= Ground Environmental Control System,地面环境控制系统
🗣️ 情景例句
No, he never did.
没有， 从来没有。
The fox changes his skin but not his habit.
狐狸可以改变皮毛，但不能改变习性。
Collecting, by occupying spare time so constructively, makes a person contented, with no time for boredom.
收藏活动通过富有建设性地利用业余时间使人感到心满意足，不再有无聊之日。