ally

在危机中，一个强大的盟友是无价的。

In a crisis, a strong ___ally is invaluable.

他被普遍认为是首相最亲密的政坛盟友。

He is widely regarded as the Prime Minister's closest political ___ally.

为了寻求保护，这个小国与一个强大的盟友结成了联盟。

Seeking protection, the smaller country entered into an alliance with a powerful ___ally.