Today, the design phase uses a very well - established principle called modularity.
今天, 设计状态使用叫做模组化的一项非常已确立的原则.
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China, therefore, made use of a well - established principle in international law, and acted in preemptive self - defence .
根据既定的国际法原则, 中国于是采取了先发制人的 自卫.
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