我的朋友在离别前给我一张照片留作纪念: my friend gave me his picture as a keepsake before going away. commemorative
却: Ⅰ动词1.(后退) step back 短语和例子退却 go back; retreat2.(使退却) drive back; repulse 短语和例子却敌 repulse the enemy3.(推辞; 拒绝) decline; refuse; reject 短语和例子推却 decline; refuse; 盛情难却。 it would be ungracious no