資本的英語翻譯：

capital; principal; what is capitalized on
【經】 accounting capital; capital; negative debt; principal; proprietorship

回流的英語翻譯：

circumfluence; refluence
【化】 back flow; circulation reflux; contra-flow; flow-back; reflux
refluxing
【醫(yī)】 backflow; palirrhea; reflux reflextonus; refluxing; regurgitation
return; return current