非法入境的英文：
illegal immigration

参考例句：

Aliens who enter this country illegally will be deported
非法入境的外国人将被驱逐出境。

was deported for entering the country illegally.
由于非法入境而遭驱逐。

illegal是什么意思：
adj. 违法的
n. 非法移民

They are illegal immigrants.
他们是非法移民。

Illegal immigrants or workers are sometimes referred to as illegals.
非法移居的移民或工人有时也被称为非法移民。

It is illegal to drink underage in America.
在美国，未到年龄喝酒是违法的。

It is illegal to tap a telephone wire.
窃听电话是非法的。

Selling the fell is illegal.
销售兽皮是违法的。

immigration是什么意思：
n. 移民；移居，移入

They are illegal immigrants.
他们是非法移民。

Compendium of Immigrant Stock Data
移民血统资料简编

Opposition to immigration is growing.
对外来移民的敌对则在上升。

There are strict controls on immigration into this country.
移民到这个国家有严格的限制。

They are people sheltering illegal immigrants.
他们是为非法移民提供庇护的人们。