n. (c./u.)名詞 (可數/不可數)血液循環The heart is responsible for blood circulation
n. (c./u.)名詞 (可數/不可數)在人與人之間的傳遞This birthday card is in circulation so everyone in the office can write in it
n. (c./u.)名詞 (可數/不可數)發行量The circulation of newspapers has decreased due to online news.
n. (c./u.)名詞 (可數/不可數)流傳The rumour is in wide circulation.
n. (c./u.)名詞 (可數/不可數)空氣流通Good circulation of air is important in preventing the spread of disease.
n. (c./u.)名詞 (可數/不可數)貨幣流通The circulation of money in the economy is a key indicator of economic health.
n. (c./u.)名詞 (可數/不可數)網站流量The website's circulation has increased since the redesign.
n. (c./u.)名詞 (可數/不可數)發行量The newspaper has a circulation of 50,000 copies daily.