常見例句雙語例句But until recently, researchers didn't know what linked those risk factors together, when it comes to insufficiency of the collateral circulation.但直到最近，研究人員不知道什么將這些危險因素聯(lián)系在一起，當(dāng)涉及到支循環(huán)不足時。After 2-3 months the situation can improve due to smaller arteries opening up (collateral circulation) and carrying more blood around any blockages.2-3個月后情況會好轉(zhuǎn)，因為更小的動脈血管打開（即側(cè)支循環(huán)）并能輸送更多血液到堵塞的位置附近。 返回 collateral circulation