“附加物”的英语？

“附加物”的拼音为：...

已知有些工业上的化学物质和食物附加物是致癌的.Some industrial chemicals and food additives are known to be cancer - producing.罕见珍宝现在在一最大限度四个附加物被盖住.Rare Jewels are now capped at a maximum of four affixes.限制一些不有关确定项目类型产生附加物.Restricted some affix...