VERB
发出，排放，散发（热、光、气或气味）
If something emits heat, light, gas, or a smell, it produces it and sends it out by means of a physical or chemical process.
例句
The new device emits a powerful circular column of light.
新设备发出明亮的圆形光柱。
...the amount of carbon dioxide emitted.
二氧化碳排放量