请问immigrant和immigration作为名词时的区别

请问immigrant和immigration作为名词时的区别 immigrant和immigration什么区别? immigrant(n.)和immigration有什么区别? immigration 和immigrant有什么区别啊? immigrant和emigrant的区别 suggest和advice作为名词的区别 emigration和immigration有什么区别? 请问request和requirement同作名词时的区别. strap和strip这两个词都作为名词时的区别? immigrate与immigrants与immigration的区别 requirement demand 作为名词时的区别 尽量全面些 migration和emigration和immigration的区别 最好用英文解释