Secon
abbr. secondary electron conduction orthicon 次级电子导电正析像管
🗣️ 情景例句
Do you care to talk about them?
你想谈谈它们吗？
Are you in touch with him now?
你现在和他有联系吗？
She's been there for two months. She's been there since September.
她进校有两个月了。她自9月份起便在那儿学习了。