Gecs
[计]= Ground Environmental Control System,地面环境控制系统
🗣️ 情景例句
I have learned to use computers and have become familiar with all clerical duties.
我学会使用电脑及熟悉所有文员的工作。
I'm done.
我不行了。
Hello, Wei Hua! Nice to meet you.
魏华，见到你也很高兴！