Yī / shēng / tōng / guò / chāo / shēng / jiǎn / chá / guān / chá / luǎn / pāo / de / fā / yù / qíng / kuàng

医生通过超声检查观察卵泡的发育情况。

The doctor uses an ultrasound examination to observe the development of the ovarian follicles.