例句與造句

1. Grains containing detectable amounts of aflatoxin should therefore not be used for food or feed .
   因此，凡測出含有阿夫羅毒素的谷物都不能做糧食或飼料。
2. With rare exceptions such as a pure quartz sandstone, every rock contains detectable amounts of abundant metals .
   除了象純石英砂巖等少數(shù)例外，每種巖石都含有若干可檢出的富有金屬。
3. It's difficult to find detectable amount in a sentence. 用detectable amount造句挺難的