Ultron
波导耦合正交场放大管
🗣️ 情景例句
What's the meaning of NATO?
NATO代表什么？
How do you spend your leisure time?
你怎样打发业余时间？
so she sat down and accepted a cup of very strong tea, while he telephoned the police.
于是坐了下来，喝了一杯浓茶。与此同时，看门的人给警察挂了电话。