Have you studied the composition of the chemicals?你研究过这种药品的成分了吗?These chemicals make the fruit inedible.这些化学品使这种水果不宜食用.Chemicals Stocks, Ferroalloy and Products, PVC Resins, Plastic Raw Material, Chemical Supplies.采购产品股票...
Organic food is unadulterated food produced without artificial chemicals or pesticides.有机食品是未使用人工化学制剂和杀虫剂的纯净食品。Nitrates are chemicals that occur naturally in water and the soil.硝酸盐是水和土壤中自然存在的化学物质。Protective gloves reduce...