- 重点词汇
- 相关例句
囊胚移植和单胚胎移植被认为是提高种植率、降低多胎妊娠率的有效方法.
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Precision measurement is the key to producing interchangeable parts and mass producing goods.
精确的测量是生产互换零件和批量产品的关键.
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Nurse: The pregnancy test was positive. Where is the pain and what's it like?
护士: 妊娠检查呈阳性. 你什么地方疼,怎么个疼法?
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