盟友 /mɛŋ˧˥ joʊ˨˩˦/ Noun

English: ally
한국어: 든든한 지원군

Example

这两个国家已经结盟超过一个世纪，是坚实的[盟友]。
The two countries have been allies for over a century.
强调历史悠久和稳固的合作关系。