双语例句原声例句
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不仅如此，这些持续时间长久的物质在被弃用数年后仍然存在。
Still, they are long-lasting chemicals that remain in the environment for years after they are out of use.
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在2005年双方停止战斗时，我们应该发现这次非洲持续时间最长久的内战牺牲了250万人民的生命，另有好几百万人民流离失所。
By the time the fighting stopped in 2005, Africa's longest civil war had cost 2.5m lives and displaced many millions more.
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紫锥菊的疗效参差不齐，这种植物长久以来被人认为有助于缩短感冒持续时间。
Evidence has been mixed on echinacea, a purple flowering plant long thought to help shorten the duration of colds.
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So this might be a longer lasting, more permanent form of elimination of expression of a particular gene.
所以这似乎是一种持续时间更长,更长久地阻止某个特定基因表达的方法
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