US - ROK alliance的用法和样例：
例句
- It seeks closer ties with democratic India and recently formalised a security alliance of sorts, only Japan's second, with Australia.
日本寻求与印度加强联系，并在日美同盟之外单独跟澳大利亚结盟。 - Above all, since the DPJ took power, it has been unclear how its goal of partially balancing Japan's ties to America with closer ones to China would affect the American alliance.
问题的核心还是，自民主党执政以来，它通过密切与中国的关系来达到部分平衡日美关系的政策对日美同盟会带来多大的影响始终没有明确的说法。
