Not all chemicals normally present in living organisms are harmless.
并不是所有常见于生物体中的化学物质都无害。
《柯林斯高阶英汉双解学习词典》
Or is it just a harmless vestige of some ancient pagan ritual?
或者只是古代某些异教徒(举行宗教)仪式遗留下来的一种无害的风俗?
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They might view it as a harmless rite of passage that is best ignored.
他们或许视此事为无需大惊小怪、无害的成长惯例.
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目的研究能量多普勒显像(PDI)在中型动脉的显示效果,探讨超声无创性诊断肾动脉狭窄的可能性.
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Reasonably harmless are the kind who are friendly only stand to gain from it.
有些人对别人友好,是因为他知道自己将会从中获利,这样的人还算不上恶劣.
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It'settled back to sporadic, harmless streaming like a simmering kettle.
它又回到老样子, 象一把烧开水的壶似的,不时散发着无害的缕缕蒸汽.
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Many diseases that could harm humans may be both undetectable and harmless in their natural hosts.
许多对人体有害的疾病在它们天然的寄生体中可能既不易被察觉又是无害的.
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聚丙烯酰胺本身没有毒性,但其降解后的丙烯酰胺单体具有累积性神经毒性,并且被确定为有基因毒性的致癌物质。
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It was excellent drill for their memories a harmless amusement.
这对她们的记忆力来说是一种绝妙的训练,又是一种有利无弊的娱乐.
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Then anaerobic bacteria take that nitrate and turn it into harmless nitrogen gas.
最后厌氧菌将硝酸盐转化成无害的气体氮.
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Harmless to grain cargo . Applicable in thick coats by standard airless spray equipment.
采用标准的无空气喷涂设备得到规定的厚涂层.
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