A grating, esp. one which is made of slender metal bars.

格子；栅栏；铁栅栏。

Grating or screen for protecting and admitting air to an automobile engine or a radio.

铁栅；铁网(有保护作用且让空气进入汽车引擎或收音机内，如汽车引擎前端之钢质网格或栅条)。