如果没有rú guǒ méi yǒu
without; but for; failing; in defect of
原声例句
Osmosis-心血管
Now, sometimes, individuals might have an atrial septal defect, a small opening between the right and left atrium.
同时,某些人患有房间隔缺损的,即右心房与左心房之间有一个小的缺口。
医学英语 心内科
Fortunately, this complication, called the Eisenmenger syndrome, usually develops over many years and occurs only in a small percentage of people with large atrial septal defects.