Rectron
电子管整流器
🗣️ 情景例句
What number do I dial?
我应该拨哪个号码呢？
Experience is the father of wisdom and memory the mother.
经验是知识之父，记忆是知识之母。
He's upstairs.He's having a bath.
他在楼上。他正在洗澡。