The government's intention to seek closer Asia ties need not come at the expense of the United States and may actually help Washington if Japan reduces tensions with wary neighbors.
其中的 "The government's intention to seek closer Asia ties "是否可當主詞, 以下小弟把這段當作是AAA
at the expense of the United States and may actually help Washington 是不是全部屬於need not come的受詞或補語之類的
還是說 may actually help Washington 和 need not come at the expense of the United States 是同等的地位
也就是 AAA need not come at the expense of the United States and AAA may actually help Washington
最後 if Japan reduces tensions with wary neighbors , 這句是針對 may actually help Washington , 還是針對 if 前面所有的句子
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