Pecm
abbr. passive electronic countermeasures 被动电子对抗，无源[消极]电子干扰; Preliminary Engineering Change Memorandum 初步工程更改备忘录（美国空军）; processing element control memory 处理单元控制存储器
🗣️ 情景例句
I love you, Grandpa.
我爱你， 爷爷。
I can't begin to tell you how much I appreciate this honor.
我实在是无法表达我对给予我此荣誉的感激之情。
Excuse me!
打扰一下。