Jac
abbr. 飞机制造联合委员会（oint Aircraft Committee）
🗣️ 情景例句
Thank you very much.
非常感谢。
Sorry, She is out. Shall I take a message?
抱歉，她外出了，你要留口信吗？
First the electroencephalograph (which is simply a device for recording the electrical activity of the brain by attaching electrodes to the scalp) shows that while there is a change in the pattern of activity during sleep,
第一点，脑电图记录仪（不过是一种把电极接到头皮上记录脑电活动的仪器）显示，人在睡眠时大脑活动的方式有变化，