n.[C]

1. 同盟国；同盟者
   England and Russia were allies in the Second World War.

   英国和俄国在二次世界大战中是盟国。

2. （大写）第一次世界大战中的协约国；第二次世界大战中的同盟国[the P]
3. 伙伴，助手
4. 近亲动物（或植物）；同类物

vt.

1. 使结盟；使联姻[（+with/to）]
   The small country allied itself to/with the stronger power.

   小国和强国联盟。

2. （在起源或性质上）与……相关联[H][（+to）]
   The English language is allied to the German language.

   英文和德文属同一语系。

vi.

1. 结盟；联合[（+with/against）]
   The three sisters allied against their elder brother.

   三姊妹联合起来反对哥哥。

n.

v.

1. (ally oneself with) side with.
2. (ally something to/with) combine a resource or commodity with (another) for mutual benefit.

n.