Whenever I had a cold, my grandmother would concoct a remedy out of herbs, ginger, lemons and garlic.我一感冒，祖母就会用药草、生姜、柠檬和蒜调制汤药。I gave her a tip on how to concoct a new kind of soup.我教她配制一种新汤的诀窍。Francis is accused of having helped him to concoct a false alibi.弗朗西斯因帮助他捏造不在犯罪现场的证据而被起诉。