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☀ 东西 [dōng xī]
（东边和西边） east and west
（从东到西） from east to west:
例句：
这地方东西3公里， 南北5公里。This district is three kilometres across from east to west and five kilometres from north to south.
短语:
东西不对称性 east-west asymmetry;
东西构造带 eastwest structural zone;
东西距 {地测} easting; departure;
东西线 east-west line;
东西效应 east-west effect; asymmetric effect
井底之蛙，源于《庄子·外篇·秋水》中的一则寓言故事，成语“井底之蛙”和“坐井观天”均出自这则寓言，被用来比喻和讽刺比喻眼光狭隘且自以为是的人。
The frog at the bottom of the well is derived from a fable in “Zhuangzi · Waipian·Qiu Shui”. The idioms “frog at the bottom of the well” and “seeing the sky at the well” are both derived from this fable. They are used to metaphor and satirize the narrow-eyed and self-righteous people.
杞人忧天，是汉语成语，读音是qǐ rén yōu tiān，意思是总是去忧虑那些不切实际的事物。杞人忧天是《列子·天瑞》篇中的一则寓言，后来成为一个固定成语，常用来讽刺那些不必要的担心，但也有人用其表达一种忧患意识。
To worry about the sky is a Chinese idiom with the pronunciation of qǐ rén yōu tiān, which means to always worry about those unrealistic things. Worrying about the sky is a fable in “Liezi Tianrui”, which later became a fixed idiom, often used to ridicule those unnecessary worries, but some people use it to express a sense of worry.