大冲
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(大(dà )冲(chōng ),大(dà )冲(chōng ))
天(tiān )文(wén )学(xué )术(shù )语(yǔ )。指(zhǐ )火(huǒ )星(xīng )离(lí )地(dì )球(qiú )最(zuì )近(jìn )的(de )时(shí )期(qī ),隔(gé )十(shí )五(wǔ )年(nián )到(dào )十(shí )七(qī )年(nián )重(zhòng )複(fú )一(yī )次(cì ),因(yīn )为(wéi )距(jù )地(dì )球(qiú )近(jìn ),这(zhè )时(shí )火(huǒ )星(xīng )显(xiǎn )得(dé )最(zuì )亮(liàng )。
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