The upstreamof Xihe River was polluted by heavy metals,in whichthe number of 3 kinds of microbes were all the least,and the pollution of middle reaches was next and that of downstreamwas slighter.
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细河上游重金属污染严重,3类微生物数量均最低,中游污染次之,下游污染较轻。
单词 The upstreamof Xihe River was polluted by heavy metals,in whichthe number of 3 kinds of microbes were all the least,and the pollution of middle reaches was next and that of downstreamwas slighter. 的词典定义。@海词词典-最好的学习型词典
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