| 单词 | 天然物质 |
| 例句 | DEFINITIVE EXAMPLES 权威例句〔artificial〕This product contains no artificial colors/flavors/sweeteners—only natural substances are used.本产品不含人造色素/香料/甜味剂——只采用天然物质。韦氏高阶〔crude〕A substance, especially petroleum, in its unrefined state.天然物质：处于未加工状态的物质，尤指原油美国传统〔expand〕Natural materials expand with heat.天然物质遇热膨胀。外研社新世纪〔imitate〕They produce artificial chemicals which exactly imitate particular natural ones.他们生产酷似某些天然物质的人造化学品。剑桥高阶〔product〕The sap used to make maple syrup is a natural product.用于制作枫糖浆的汁液是一种天然物质。韦氏高阶The organization aims to promote the development of medicines from natural substances such as snake venom.这个组织旨在促进发展在天然物质中提取药物，诸如蛇毒之类。剑桥国际 |
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