Gravitron
气体放电管
🗣️ 情景例句
What was that about?
说些什么？
If you want a thing (well) done, do it yourself.
要想做好事情，就要自己动手。
By having to sleep in the open, he gets far closer to the world of nature than most of us ever do.
由于被迫在露天睡觉，他比我们中许多人都离大自然近得多。