viviparously

例句：

1. 1. The baby was born viviparously, meaning he was born with a placenta.
   这个婴儿是早产儿，意味着他出生时有胎盘。
2. 2. The scientist discovered that the virus can be transmitted viviparously through sexual contact.
   科学家发现这种病毒可以通过性接触传播。
3. 3. The couple decided to have a child together, despite their different ages and backgrounds.
   尽管他们年龄和背景不同，这对夫妇决定要个孩子。