集合: gather; assemble; muster; ca ...与: take part in; participate in串: string together的: 4次方是 The fourth power of 2 i ...问题: question; problem集合与: set and string problems与集合有关的问题: problem involving sets表示的问题: problem of representation拨放的问题: sc can't pass authentication不育的问题: infertility菜单的问题: dropdownlist常见的问题: faq frequently asked questions从属的问题: auxiliary problem存在的问题: open question; problem当面的问题: purpose当前的问题: muttons迪克的问题: dick's questions多目的问题: multiobjective problem繁难的问题: knotty problem放屁的问题: problem with gas复杂的问题: complex problem关心的问题: concern关于…的问题: a matter of; question (to)合理的问题: fair question很傻的问题: about ff7