医生建议她做超声检查以确认胎儿的位置。

The doctor recommended an ___ultrasound to confirm the baby's position.

医生使用超声波来观察胎儿在子宫里的发育情况。

Doctors use ___ultrasound to monitor the baby's development in the womb.

医生用超声波检查婴儿的情况。

The doctor used the ___ultrasound to check the baby's condition.