• n. 蒸汽；烟雾
• vt. 使……蒸发；使……汽化
• vi. 蒸发；吹牛；沮丧

词源不详。

vapor (n.)

late 14c., from Anglo-French vapour, Old French vapor "moisture, vapor" (13c., Modern French vapeur) and directly from Latin vaporem (nominative vapor) "a warm exhalation, steam, heat," of unknown origin. Vapors "fit of fainting, hysteria, etc." is 1660s, from medieval notion of "exhalations" from the stomach or other organs affecting the brain.

1. The two principal combustion products are water vapor and carbon dioxide.

两种主要的燃烧产物是水蒸气和二氧化碳。

来自柯林斯例句

2. The car windows were fogged with vapor.

车窗上满是雾气。

来自柯林斯例句

3. When nitric acid is poured on copper, a brown vapor gives off.

将硝酸倒在铜上, 会散发出一种棕色的蒸气.

来自《简明英汉词典》

4. Water vapor is water in the form of a gas.

水蒸气是气态的水.

来自《简明英汉词典》

5. The cold wind condenses vapor into rain.

冷风使水蒸气凝结成雨.

来自《简明英汉词典》