If those responsible for food safety detect a substance in food that exceeds maximum permissible limits , or is simply banned , its important and increasingly standard practice to call for a product recall 如果負(fù)責(zé)食品安全的部門(mén)在食品中檢測(cè)到一種物質(zhì)超過(guò)了法規(guī)中規(guī)定的最大容許限量,或者該物質(zhì)是被禁止在食物中出現(xiàn)的,那么最重要的是,也是目前日益標(biāo)準(zhǔn)化的做法,就是將這些食物召回。