On no account should the mixture boil.切勿让这种混合物沸腾。On no account should you leave the door unlocked.你无论如何也不应该不锁门.When asked for your views about your current job, on no account must you be negative.当你被问及对目前工作的看法时，绝不要表现得消极。...

绝不，切莫...

on no account的音标：...