give out意思为发出

造句：

The leaves gave out a whirring sound. 

树叶发出沙沙声。

The sun gives out light and heat to the earth. 

太阳向地球发出光和热。

Scientists have found that all kinds of plants give out VOCs when being attacked.

科学家发现，各类植物受到攻击时都会发出挥发性有机化合物。