Ophitron
小型微波发生器, 微波振荡管
🗣️ 情景例句
If there's anything you need, just knock on my door.
有什么需要帮忙的话，尽管敲门来找我。
I can only afford to watch television for an hour gonight because I have homework to do.
因为我要做家庭作业，所以今晚我只能花一小时看电视。
only of metal, which wears away by friction.
而是由金属组成，而金属可以随着磨擦而磨损殆尽。