naturally occurring是什么意思

naturally occurring是什么意思
naturally occurring是什么意思

naturally occurring是什么意思
naturally occurring
网 络
天然存在的；自然存在；自然发生；自然产生
双语例句
1.The oil is attacked by naturally occurring microbes which break it down.\x09
原油受到了自然产生的分解油类物质的微生物的侵蚀.
2.Oil is refined to remove naturally occurring impurities.\x09
油经过提炼去除天然存在的杂质.