superfluous
/su:ˈpɜ:fluəs; also, in ɑritish use, 英式英语读作 sju:-; sʊ`pəflʊəs/ adj
more than is needed or wanted 过多的; 过剩的; 多余的; 不必要的
Repack all the superfluous cups in the box. 把多余的杯子都重新装入箱中.
The crowd was so well-behaved that the police presence was superfluous. 群众秩序良好, 警方在场并无必要.
That remark was superfluous, ie It should not have been made, eg because it contributed nothing or was offensive. 那样的话多余说.
They were only interested in each other, so I felt rather superfluous, ie felt that I shouldn't be there. 他们只是意在对方, 所以我自觉多余在场.