Sporadic



GRE 蓝宝 Barron

解释

GRE 红宝书

• adj.不定时发生的
• ［英］ adj.不定时发生的 ( occurring occasionally)
• ［类］ 反义词: chronic ( 长期的)
• ［例］ sound of sporadic gunfire

Webster Collegiate

adjective

• Etymology: Medieval Latin sporadicus, from Greek sporadikos, from sporadēn here and there, from sporad-, sporas scattered; akin to Greek speirein to sow — more at sperm
• Date: circa 1689
• occurring occasionally, singly, or in irregular or random instances <sporadic protests><a sporadic disease>
• Synonyms: see infrequent
• ? sporadically adverb

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