As a fire science major, you'll learn how to handle fire extinguishers, chain saws, and other tools of the trade.

火灾科学专业学习如何使用灭火器，锯子等这类的工具。

youdao

The pulled handle would fire a small rocket through the airplane's roof and release the parachute.

FORBES: Magazine Article

"We need to get a really good handle on that fire before high fire danger conditions return, " said a Rural Fire Service (RFS) spokeswoman.

BBC: Australia battles scores of bushfires

How to handle : Do not fire.

FORBES: How To Deal With Talent Problems In High-Growth Startups