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
Will you forgive me?
能原谅我吗？
Never show the bottom of your purse or your mind.
钱包不露底，思想需保留。
Growth, however, brings new problems and concerns.
不过，发展也带来了新的问题和顾虑。