1. As you suggested, the fish contains a toxic substance. 正如你提出过的那鱼含有毒性物质。
2. How should we tackle toxic substance contained in food? 面对食物中的有毒物质,我们应该怎么做?
3. Automobile exhaust tetraethyl lead is a highly toxic substance. 汽车尾气中的四乙基铅是剧毒物质。
4. Identification standards for hazardous wastes-Identification for toxic substance... 危险废物鉴别标准毒性物质含量鉴别。
5. PETA will help pay your $50,000 bill for substance addiction treatment if you'll rid yourself of one more toxic substance: meat. PETA将支付入院期间50000美元的费用,只要你愿意放弃另外一项更不健康的物质:肉类。