a baptism by fire اولین تجربه از کاری دشوار یا دردناک؛ غسل تعمید با آتش

A baptism of fire or (chiefly US) baptism by fire is a first experience that is very difficult or painful, such as the first time that soldiers are in a battle.
• He described his troop's baptism of fire on the front lines.
• Covering the disaster was a baptism by fire for the young reporter.  

• Giving a speech to the sales conference was her baptism of fire as sales manager. 

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baptism of fire
n. 1. A soldier's first experience of actual combat conditions. 2. A severe ordeal experienced for the first time.

Excerpted from American Heritage Talking Dictionary
Copyright © 1997 The Learning Company, Inc. All Rights Reserved.