動詞 banish:

1. expel from a community or group
   同義詞：ban, ostracize, ostracise, shun, cast out, blackball
2. ban from a place of residence, as for punishment
   同義詞：ban
3. expel, as if by official decree
   同義詞：relegate, bar
4. drive away

1. He is banished for ten year.
   他被放逐了10年。
2. The spy was dishonourably banished from, the land.
   那個間諜被不光彩地驅逐出境。
3. He was banished from the realm.
   他被驅逐出境。

ban.ish

v.tr.（及物動詞）
ban.ished,ban.ish.ing,ban.ish.es
To force to leave a country or place by official decree; exile.
放逐，流放：被官方法令強迫離開某國或某地；放逐
To drive away; expel:
趕走；排除：
例句：
We banished all our doubts and fears.
我們消除了所有的懷疑與恐懼

來源：
Middle English banishen
中古英語 banishen
from Old French banir baniss-
源自 古法語 banir baniss-
[of Germanic origin] * see bh3- 2
[源于日耳曼語] *參見 bh3- 2

【引伸】
ban.isher
n.（名詞）
ban.ishment
n.（名詞）
<參考詞匯><同義詞>banish,exile,expatriate,deport,transport,extraditeThese verbs mean to send away from a country or state.
這些動詞意指將某人遣出某國或某州。
Banish applies to forced departure from a country by official decree:
Banish 用于被政府法令強迫離開某國：
例句：
was convicted of heresy and banished from the kingdom.
被控為異端并被逐出王國。

Exile specifies departure from one`s own country, either involuntarily because of legal expulsion or voluntarily because of adverse circumstances:
Exile 特指離開某人的祖國，或因遭到法律上的驅逐非自愿地離開或因形勢不利而自愿地離開：
例句：
When the government was overthrown, the royal family was exiled.
政府被推翻后，皇室遭到驅逐。

Expatriate pertains to departure that is sometimes forced but often voluntary and may imply change of citizenship:
Expatriate 有時用于被迫的離開，但常常是自愿地離開并可能意味著國籍的改變：
例句：
an immigrant whose citizenship was revoked and who was expatriated because he had concealed his criminal record.
這位移民因為隱瞞了犯罪的事實被取消了國籍并被驅逐出境。

Deport denotes the act of sending an alien abroad by governmental order:
Deport 指由政府下令將某外國人驅逐出境的行為：
例句：
was deported for entering the country illegally.
由于非法入境而遭驅逐。

Transport pertains to the sending abroad, usually to a penal colony, of one convicted of a crime:
Transport 指將罪犯流放到勞役地：
例句：
Offenders are no longer transported to Devil`s Island.
犯人們不再被流放到魔鬼島去了。

Extradite applies to the delivery of an accused or convicted person to the state or country having jurisdiction over him or her:
Extradite 用于將被指控有罪的人交給對他或她有審判權的國家：
例句：
The court refused to extradite political refugees.
法庭拒絕引渡政治避難者。