延长 yánchángYáncháng HSK4 prolong Definitions Defs Origin Strokes Stroke Words Sentences Sents Showing: extend All meanings 10 yáncháng 9 prolong 8extend 1Yáncháng 1 Yanchang 1 1 sentence for 延长 (yáncháng — extend) 工程师们计划将这条高速公路再延长一百公里。 gōngchéngshī men jìhuà jiāng zhè tiáo gāosù gōnglù zài yáncháng yībǎi gōnglǐ. Engineers plan to extend this highway by another hundred kilometers. Source: Dong Chinese Dictionary