Phenophenanthrazine
[化] 苯并菲嗪
🗣️ 情景例句
Mrs. Stewart and I
Stewart太太和我
What's the longest river in the United States?
在美国最长的河是什么？
He was still smiling when the door opened and his wife came in.
他正笑着的时候门开了，他的妻子走了进来。