Warning: file_put_contents(/www/wwwroot/zidian/biehu.cn/cache/6143382dbcc4051a1940677cab24d062.txt): failed to open stream: No space left on device in /www/wwwroot/zidian/biehu.cn/index.php on line 58 knapsack英英字典_knapsack剑桥英语解释_knapsack柯林斯英文解释_甲百汇小鸡词典
1. N-COUNT A knapsack is a cloth or leather bag that you carry on your back or over your shoulder, for example when you are walking in the countryside. 背包