baptisma ,baptism of 'fire1.■an unpleasant or frightening first experience of sth 火的洗礼；初次的不愉快﹙或令人恐惧的﹚经历:Her first day in the job was a real baptism of fire because she had to deal with a very difficult case immediately. 从事这项工作的第一天她就经受了一场严峻的考验，因为她得立即处理一件非常棘手的事情。