An unborn infant; a fetus.
胎儿没有出生的婴儿; 胎儿
The position of the fetus in the uterus at birth with respect to the mouth of the uterus.
产位, (胎儿)先露位置分娩时胎儿在子宫中相对于子宫口的位置
Diagnostic imaging in which ultrasound is used to visualize an internal body structure or a developing fetus.
超声波扫描术利用超声波来显示耳体结构或胚胎发育情况的诊断用的成像法
