guó jiā / zhèng zài / jiā qiáng / hé fáng yù / xì tǒng / yǐ / yìng duì / qián zài / de / hé wēi xié

国家正在加强核防御系统，以应对潜在的核威胁。

The country is strengthening its nuclear defense system to deal with potential nuclear threats.