Give off
to send (light, energy, heat, smell, etc.) out from a source散发(光、能量、热量、气味等)
例：
This coffee gives off a nice chocolatey aroma.这个咖啡散发出巧克力的味道
Our electric heater may be small, but it gives off a lot of heat.我们的取暖器虽然小，但却可以发出巨大的热量。
give off an air of superiority /sʊˌpiriˈorəti/
一副高高在上，很优越的感觉。一副碧池脸的样子。
常见搭配：give off an air of + sadness / confidence / happiness
The new manager gives off an air of superiority when she talks to us.新来的经理每次跟我们说话都表现出一副高高在上的样子！
生活对话模拟：
Sam: Something smells in here. Why does it smell like stinky feet?这儿什么味道？怎么闻起来像臭脚？
Betty: Yeah, I’m pretty sure it’s 小Q. Cuz he hasn’t had a bath in at least two weeks.是的，肯定是小Q（家里的狗狗）。因为它至少两周没有洗澡了。
Sam: Oh my god his mouth is giving off a really bad odor.我靠，他的嘴发出的气味好臭！
Betty: I know. It’s pretty awful. He probably doesn’t even realise he stinks, cuz he’s still giving off an air of confidence. Just look at him with his head held up high.我知道，太糟糕了。他估计都没意识到自己臭，还摆出一副很自信的样子。你看他呀，头还抬得那么高。
Sam: What a shameless dog.真是不要脸：）
这个短语在口语中主要就是表达光、能量、热量、气味等。写作的时候可以用它抽象的一个短语形式，比如：give off an air of superiority.
英语君Sam短语分级（口语）：
