Nentode
五极管(电子管)
🗣️ 情景例句
with the question of whether I go back to work or not.
为我是否回去工作这个问题。
This is a record player.
这是一台电唱机。
The remains of plants and animals that lived on land are much more rarely preserved, for there is seldom anything to cover them over.
曾在陆地上生活过的动植物的遗体被保存下来的更为罕见，因为陆地上几乎没有什么东西覆盖它们。