At each “way station,” the compound must resist the acids of digestive juices, jump membrane barriers or fend off enzymes designed to chop it into useless bits.
At each “way station,” the compound must resist the acids of digestive juices, jump membrane barriers or fend off enzymes designed to chop it into useless bits.
每到一个「关卡」，药物就必须抵抗消化液的酸侵蚀，或必须穿越膜障碍，或必须避开专门将药物砍成无用碎片的酵素。