原油的蔓延扩散超过了165平方英里，对海洋生物和水质造成了严重威胁。
The spill spread over 165 square miles and posed a serious threat to both sea life and water quality.
它是隐性遗传，多遗传给男性后代。 这种突变可能在不知不觉中蔓延扩散到后代中。
It is also recessive and is more commonly exhibited in males, causing it to go undetected in many carriers, who may pass it on to future generations.
目前，我市艾滋病疫情在局部地区增长迅猛，已进入发病死亡高峰期，形成以城镇为中心向周边乡镇全面蔓延扩散的流行态势。
At present, the city's AIDS epidemic growing rapidly in some areas has reached its peak incidence of death, to form a town center to the surrounding towns spreading popular trend overall.
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