☀ 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
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