Minitron
米尼管, 米尼特郎数字管
🗣️ 情景例句
Keep your nose to the grindstone; you'll succeed.
埋头苦干，总有成功的一天。
Are you over your cold yet?
你伤风好了吗？
It has to be tall because it is like a giant block and tackle,
井架必须很高，因为它像一个巨型滑轮组。