rarefaction

/ˌrɛrəˈfæಕ್ಷən/ /ˌreərəˈfæಕ್ಷən/

Meanings

noun

稀疏，稀薄化

A reduction in the density of a material, especially that of a fluid.

Examples :

"The sudden rarefaction of air near the explosion caused a sharp drop in pressure that shattered nearby windows. "

爆炸附近空气的突然稀薄化导致了气压的急剧下降，震碎了附近的窗户。

Related Words

density noun

/ˈdɛn.sə.ti/

密度

"The high population density of the city meant there were many people living in a small space. "

这座城市人口密度很高，意味着在很小的空间里住着很多人。

windows noun

/ˈwɪndəʊz/ /ˈwɪndoʊz/

颖壳，谷壳

"To separate out the chaff, early cultures tossed baskets of grain into the air and let the wind blow away the lighter chaff."

为了将谷壳分离出来，早期的人们会将装满谷物的篮子抛向空中，让风吹走较轻的谷壳。

sudden noun

/ˈsʌdən/

突然事件，意外。

"The sudden announcement of a school holiday surprised everyone. "

学校突然宣布放假，这事儿让大家都感到很意外。

especially adverb

/əˈspɛʃ(ə)li/

特别，尤其。

"My sister is very helpful, especially when it comes to organizing things. "

我妹妹很乐于助人，尤其是在整理东西方面。

material noun

/məˈtɪəɹɪəl/ /məˈtɪɹi.əl/

材料，材质

"Asphalt, composed of oil and sand, is a widely used material for roads."

沥青是由石油和沙子组成的，是一种广泛使用的道路材料。

fluid noun

/ˈfluːɪd/

液体, 流体

"The water in the swimming pool is a fluid that easily takes the shape of the pool. "

游泳池里的水是一种流体，能够很容易地呈现出泳池的形状。

shattered verb

/ˈʃætəd/ /ˈʃætɚd/

破碎，粉碎

"The miners used dynamite to shatter rocks."

矿工们用炸药把岩石炸得粉碎。

reduction noun

/ɹiˈdɑk.ʃən/

减少，降低，缩减

"The reduction in homework assignments allowed students more free time. "

作业量的减少让学生们有了更多自由时间。

nearby adjective

/ˌnɪərˈbaɪ/ /ˌniːrˈbaɪ/

附近，邻近的.

"He stopped at a nearby store for some groceries."

他去附近的一家商店买了些杂货。

caused verb

/kɔzd/

导致，引起，造成

"The lightning caused thunder."

闪电引起了雷声。

explosion noun

/ɪkˈspləʊ.ʒən/ /ɛkˈsploʊ.ʒən/

爆炸，爆发

"The firework display ended with a spectacular explosion of color and sound. "

烟花表演在一场色彩与声音的壮观爆炸中结束。

pressure noun

[ˈpɹɛʃ.ə(ɹ)] [ˈpɹɛʃ.ɚ]

压力，压强。

"Apply pressure to the wound to stop the bleeding."

给伤口施加压力，止住出血。