baptism of fire

• 1. 

  N-COUNT If someone who has just begun a new job has a baptism of fire, they immediately have to cope with very many severe difficulties and obstacles. 炮火的洗礼; 严峻的考验 [usu sing]

  例：

  It was Mark's first introduction to emergency duties and he came through his baptism of fire unscathed.

  那是马克第一次接受紧急工作，但是他经受住了炮火的考验，毫发未损。