Gdt
气体放电管（gas discharge tube）
🗣️ 情景例句
What university did you graduate from?
你从哪所大学毕业的？
He is a fool who cannot be angry,but he is a wise man who will not.
不会发怒是蠢人，不愿发怒是聪明人。
Bless you!
祝福你！