Radiotron
真空管, 三极电子管
🗣️ 情景例句
Listen to the sounds of the summer that surround us.
仔细倾听环绕我们的夏夜声息。
Health is happiness.
健康就是幸福。
In England they call this line a queue. You must always wait in a queue.
在英国人们把这样的行列叫队。等车时你总得排队。