The judge ordered that the jury not be photographed, and a shield prevents the television camera from accidentally covering any of the 12 jurors or the five alternates.

The horizontal, metal shield prevents the cab-roof paint from burning.

A mental shield prevented the reading of his thoughts.

The shield can prevent the user from eating or drinking while the device is active, but experienced users have been known to eat and drink while wearing it.

To her regret, the mobile shield prevented her from studying, or even detecting, the Chiar nanites.

The shield prevented the newly dug tunnel from collapsing before it could be lined with cast-iron segments.

The shield prevents ionized current paths that might form within other parts of the tube.

The shield prevents them from absconding with anything of value.

But I need to feel it myself through the crystal and the shield is preventing me.

A nipple shield makes latching easier and prevents the baby becoming discouraged.