Xto
abbr. X-band triode oscillator X波段三级真空管振荡器
🗣️ 情景例句
If I fail this exam I'll fail the course.
我要是考试没通过，这门课就没学分了。
He that converses not knows nothing.
不和人交谈的人一无所知。
How often do you write?
你们隔多久写信？