一：placenta是什么意思（中英文）解释的意思

placenta是指哺乳动物和某些爬行动物胎盘内部的组织，它负责胎儿与母体之间的营养和气体交换。在人类和其他哺乳动物中，胎盘通常在怀孕期间形成，并在分娩时排出体外。

Placenta is the internal tissue in the placenta of mammals and some reptiles, which is responsible for the exchange of nutrients and gases between the fetus and the mother. In humans and other mammals, the placenta usually forms during pregnancy and is expelled from the body during childbirth.

二：怎么读（音标）

/pləˈsɛntə/

三：用法

作为名词，placenta可以用来指代哺乳动物和某些爬行动物胎盘内部的组织。它也可以用来指代分娩后排出的胎盘。

As a noun, placenta can refer to the internal tissue in the placenta of mammals and some reptiles. It can also refer to the afterbirth that is expelled after childbirth.

四：例句1-5句且中英对照

1. During pregnancy, nutrients are passed from the mother to the fetus through the placenta.

怀孕期间，营养通过胎盘从母亲传递给胎儿。

2. The doctor examined the placenta after delivery to ensure it was complete.

医生在分娩后检查胎盘，确保它完整。

3. In some cultures, the placenta is considered a sacred organ and is buried as a sign of respect.

在某些文化中，胎盘被视为神圣的器官，被埋葬作为尊重的象征。

4. The placenta plays a crucial role in the development and nourishment of the fetus.

胎盘在胎儿的发育和营养中起着至关重要的作用。

5. The midwife carefully examined the placenta to ensure there were no complications during childbirth.

助产士仔细检查胎盘，确保分娩过程中没有并发症。

五：同义词及用法

1. Afterbirth：指分娩后排出的胎盘。

2. Chorion：指哺乳动物和某些爬行动物胎盘外部的组织。

3. Fetal membrane：指包裹着胎儿的膜。

4. Umbilical cord：指连接胎儿和母体的脐带。

5. Placentation：指哺乳动物和某些爬行动物形成胎盘的过程。

六：编辑总结

Placenta是哺乳动物和某些爬行动物内部组织，负责营养和气体交换。它在怀孕期间形成，并在分娩时排出体外。Placenta对胎儿的发育和健康至关重要，因此在分娩后需要仔细检查。除了作为名词指代胎盘，它还可以用来指代分娩后排出的胎盘。同义词包括afterbirth、chorion、fetal membrane、umbilical cord和placentation。