Ophitron
小型微波发生器, 微波振荡管
🗣️ 情景例句
we need to have our own place to live.
我们应该有自己的房子。
I am very happy that you have come all the way from the United States to visit our company.
您不远千里从美国来我公司访问，我们感到非常高兴。
Will you please have the check certified?
那么请开保付支票好吗？