Other poisonous and harmful materials or elements set by nation .

国家规定的其他有毒、有害物质或元素。

This poisonous combination could fuel instability rather than assuage it .

这种有害的结合只会激起而不是减轻不稳定。

He frets as his children breathe in poisonous smoke from an overfilled rubbish dump nearby .

当他的孩子们在附近堆积如山的垃圾场传来的毒烟中呼吸时，他感到苦恼。

Scientists have long speculated that 's because so many poisonous plants are bitter .

科学家猜测这是因为很多有毒的植物都是苦的。

Providing that safe tolerances be set for unavoidable poisonous substances .

对于不可避免的有毒物质，要设定安全耐受性限度。