Eikonoscope
光电摄像管
🗣️ 情景例句
Calm down.
冷静一点。
Generally speaking, it's cheaper but slower to ship goods by sea than by rail.
总的来说，海运比铁路运输更便宜，但速度慢一些。
We had been in the hat shop for half an hour and my wife was still in front of the mirror.
我们在这家帽店已经呆了半个小时了，而我的妻子仍在镜子面前。