burner rim

例句：

1. 1. The fireman was trying to extinguish the burning edge of the fire.
   消防员试图扑灭火势的边缘。
2. 2. The chef carefully trimmed the flame rim of the steak to enhance its flavor.
   厨师小心翼翼地修剪牛排的火焰边缘，以提升其风味。
3. 3.The car's exhaust pipe is designed to protect the burner rim from damage during operation.
   汽车的排气管设计用来在运行过程中保护燃烧器边缘不受损害。