不同的语境可以有不同的说法用法比如接受礼物作为留念你可以说accept/keep it (as a souvenir作为纪念):合影留念have a group photo taken to (mark the occasion留念v);照相留念have a photo taken （as a memento作为纪念）;
合影留念 [词典] take a group photo to mark the occasion; have a group photo taken to mark the occasion; [例句]开会前，6位外交部长合影留念。Before going into their meeting the six foreign ministers posed for photographs.
dragonyanyan
