flak jacket

n.

防弹衣；

复数：flak jackets

Flak Jacket for Editors
Flak jacket for editors.
Feather flak jacket
Flak jacket protective cover for spent nuclear fuel storage casks
#Thailand to try US journalist for carrying flak jacket
A policeman's lot is not a happy one: flak jacket radiculopathy
Re M (Medical Treatment: Consent) Time to Remove the Flak Jacket
The shielding capacity of the standard military flak jacket against ballistic injury to the kidney.
I know there's trouble in the Middle East when I need my flak jacket, gas mask and Kevlar boxers
Discussion of "The Shielding Capacity of the Standard Military Flak Jacket Against Ballistic Injury to the Kidney".