harmless substance翻译
harmless substance的基本解释
读音: 美: 英:
无害物质：指不会对人体或环境造成危害的物质。
例句
One group was given a drug while the other group received a harmless substance instead of medicine without their knowledge.一组服用药物，而另一组在不知情的情况下服用无害的药物。It was only a placebo, a harmless substance.它仅仅是一组服用安慰剂，一种无害的物质。
But it was only a placebo, a harmless substance.但是那只是一片安慰剂，一种无害的物质。
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