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

線的英語翻譯：

clue; line; string; stringy; thread; tie; verge; wire
【醫(yī)】 line; line Of occlusion; linea; lineae; lineae poplitea; mito-; nemato-
soleal line; strand; thread
【經(jīng)】 line