casus foederis

中文含义：同盟契约的情况

英语词性：noun

美式音标：[‘keɪsəs ‘fodərɪs]

同义词：alliance obligation, mutual defense obligation

易混淆单词：caseus factoris（商品交易的情况）

双语例句：

1. The attack on one NATO member is considered an attack on all members, invoking the casus foederis.

攻击北约一个成员国被认为是攻击所有成员国，激活同盟契约的情况。

2. The casus foederis clause in the treaty was invoked after one country was attacked, and all members were required to provide military assistance.

同盟条约中的同盟契约条款在一个国家受到攻击后被激活，要求所有成员提供军事援助。