give off造句

The flowers give off a heady scent at night.
这些花晚上散发出醉人的芳香.

If plastic and rubber are burnt, they'll give off poisonous gases.
要是塑料和橡胶被焚, 就会放出有毒的气体.

Fireflies give off flashes of light when they fly at night.
萤火虫夜间飞行时发出闪光.