Qdm
[計]= Quality assurance, Documentation and Maintenance,質量保證、文件編制和維護
??? 情景例句
You know what?
知道嗎？
A joke never gains an enemy but often loses a friend.
開玩笑總不能化敵為友，反而有時會失去朋友。
but it is of a kind that, if he meets it, he can readily understand and deal with.
但如果有這種情況，露營者也容易理解，知道如何對付，