Tetrode
n. 四极管
🗣️ 情景例句
When does the next train leave for New York?
到纽约的下一趟火车什么时候开车？
Poverty is apain, but no disgrace.
贫困是痛苦，但不是耻辱。
She hired a car by the hour.
她租了一辆按钟点计费的汽车。