形容詞 illegal:

1. prohibited by law or by official or accepted rules

1. All protests are brutally repressed by the government as illegal.
   所有的抗議活動都遭到當局的野蠻鎮(zhèn)壓，并被宣布為非法。
2. It's illegal to carry guns in our country.
   在我們國家，攜帶槍支是違法的。
3. Their speculative buying of grain is illegal.
   他們投機購買谷物是不合法的。
4. Abortion is illegal in this country.
   人工流產在這個國家是不合法的。
5. The jewellery firm is just a front for their illegal trade in diamonds.
   該珠寶公司不過是進行非法的鉆石交易的幌子。
6. It's illegal to read people's private letters without permission.
   未經(jīng)允許看別人的私人信件是不合法的。
7. It's illegal to kill a panda.
   殺害熊貓是犯法的。
8. He admitted that he was an illegal immigrant.
   他承認他是非法移民。

il.le.gal

adj.（形容詞）
Prohibited by law.
違法的，非法的：為法律所禁止的
Prohibited by official rules:
犯規(guī)的：為官方規(guī)則所禁止的：
例句：
an illegal pass in football.
橄欖球中的犯規(guī)傳球

Computer Science Unacceptable to or not performable by a computer:
【計算機科學】 非法的，無效的：計算機無法接受或運行的：
例句：
an illegal operation.
無效運行

n.（名詞）
An illegal immigrant.
非法移民

【引伸】
ille.gally
adv.（副詞）