Femitron
场发射电子微波管
🗣️ 情景例句
Rita Mae called yesterday. Rita Mae
昨天打电话来了。
Any personal hobbies such as sports, music and collecting stamps never had a place in his life.
任何一种个人的业余爱好，如体育活动，音乐，集邮等等在他的生活中从未有过地位。
They stretch out their legs like flying squirrels.
它们伸展四肢，就像飞行中的松鼠一样。