无用数据，无用单元，无用信息在输入、输出或存储方面不正确的、无意义的或不需要的信息 Incorrect, meaningless, or unwanted information in input, output, or memory.
棒球分会附属于一个高级联合会俱乐部的小联合会俱乐部，其负责训练新成员和保留暂时不需要的队员 A minor-league club affiliated with a major-league club for the training of recruits and the maintenance of temporarily unneeded players.
她花了冤枉钱，买的是她自己并不需要的东西。 She has wasted her money on things she doesn't need.
