Mesosiderite
中铁陨石, 中陨铁
🗣️ 情景例句
I just can't understand
我就不懂
Opportunity only knocks once.
机不可失，时不再来。
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，