发出; 放出; 散发出; 放射出

1. 发出：通过测量一物体(object)发出(give off)的光的颜色,我们能够测定该物体的温度. 具有更为广泛应用的是物质当其温度被提高时就膨胀(expand)而当其温度降低时就收缩(contract)这一现象(fact).

2. 放出,释放：give in交上;投降,屈服 | give off放出,释放 | give oneself away泄露,露马脚

3. 发出或放出(蒸气等)：give occasion to 引起 | give off 发出或放出(蒸气等) | give one's ears 不惜任何代价(要)

4. 发出或放出(光、热、气味等)：give in屈服;让步 | give off发出或放出(光、热、气味等) | give out分发;发出(气味等)

1. 释放，放出，发出（气体、热量、气味等）
If something gives off or gives out a gas, heat, or a smell, it produces it and sends it out into the air.

e.g. ...natural gas, which gives off less carbon dioxide than coal...
二氧化碳释放量低于煤炭的天然气
e.g. Substances such as ammonia give out heat when they dissolve.
诸如氨气之类的物质在溶解时会释放出热量。

verb

1. have as a by-product

e.g. The big cities gave off so many wonderful American qualities

2. give off, send forth, or discharge
as of light, heat, or radiation, vapor, etc.

e.g. The ozone layer blocks some harmful rays which the sun emits

Synonym: emitgive out