Bullets will be plucked from biathlon targets and recycled to keep the lead from poisoning ground water.
子弹将从冬季两项的射击目标上取出并回收，以防止铅污染地下水。
Structurally, the appendix is isolated from the rest of the gut, with an opening smaller than a pencil lead, protected from the fecal stream that might be carrying pathogens.
从构造上看，阑尾位于盲肠的末端，不与其他部分连结。 它有一个比铅笔心还细的开口，防止了可能携带病原菌的废物流入其中。
There are no electronic filters that separate truth from fiction. No cognitive "V-chip" to sort the gold from the lead.
世上不存在能够去伪存真的电子过滤器，也没有能够去芜存菁的认知芯片。
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