n.（外国人的）归化,（动植物的）移植,（外国的习惯、语言等的）移入,同化
They swore their allegiance to the USA and received their naturalization papers.
他们起誓忠诚于美国，随后就接到了批准他们入籍的文件。
It was this man who pulled strings for Will to get his naturalization.
就是这个人为威利幕后拉线,搞到了他的国籍证明.
Naturalization Class — Assists immigrants in preparing for their naturalization exam.
入籍班—协助移民准备入籍考试.