循環(huán)
circulate;circle;cycle;circular;rotary;revolving
一個(gè)人有動(dòng)脈、靜脈，通過心臟進(jìn)行血液～。A man has arteries and veins through which the heart circulates blood./～不息move in endless cycles/～往返move in cycles/惡性～vicious circle/良性～virtuous circle;selfsustained growth/～基金revolving fund/～系統(tǒng)circulatory system/～信貸revolving credit/～信用證revolving credit/～一體化circular integration /～支票circular check /～經(jīng)濟(jì)circular economy/～賽round robin（體育運(yùn)動(dòng)）