Ybd
abbr. Y-branching device Y型分路器
🗣️ 情景例句
Dad, Richard--Alexandra's here.
爸爸 Richard Alexandra来了。
Mr. Ken Robert comes to us from the University of Kentucky where he is majoring in economics.
罗伯特.金先生来自肯塔基大学，主修经济学。
It is hard for us to realize nowadays how difficult it was for the pioneers.
我们今天很难想像昔日的登山先驱们是多么艰苦。