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
OK, and go out and have a drink to congratulate ourselves.
对，再出去喝一杯以示庆祝。
It's a pain in the neck.
那真是件麻烦事
climbed up the dunes, and sat down on a road.
爬上沙丘，最后停在路上。