ally

vt.

1. 使結盟；使聯姻[（+with/to）]
   The small country allied itself to/with the stronger power.

   小國和強國聯盟。

2. （在起源或性質上）與……相關聯[H][（+to）]
   The English language is allied to the German language.

   英文和德文屬同一語系。

vi.

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

   三姊妹聯合起來反對哥哥。