1·Microscopic examination of a cell's chromosomes can reveal the sex of the fetus.
用显微镜检查细胞染色体可以查出胎儿的性别。
—— 《柯林斯英汉双解大词典》
2·The lungs of a fetus secrete a liquid that mixes with its mother's amniotic fluid.
胎儿的肺部会分泌一种能与母亲的羊水混合的液体。
3·Studies of animals, for example, have shown that when a rat experiences stress during pregnancy, it can cause epigenetic changes in a fetus that lead to behavioral problems as the rodent grows up.
例如，对动物的研究表明，老鼠在怀孕期间经历压力会导致胎儿表观遗传发生变化，进而导致啮齿动物在成长过程中出现行为问题。
4·Expectant mothers may not know that what they eat affects the tooth development of the fetus.
准妈妈也许不知道她们所吃的食物会影响到胎儿的牙齿发育。
5·Many imaging tests are not performed during pregnancy so as not to expose the fetus to radiation.
许多成像测试在怀孕期间不能执行，以免使胎儿暴露在辐射中。
1·Case Study: a woman in the first trimester of a pregnancy aborted her fetus before dying from rhubarb poisoning herself.
案例：一个怀胎三个月的女人先是堕了胎，而后因为吃大黄花叶自己也中毒身亡。
2·"The longer the birth interval, the less likely that the second fetus will be born alive," Lindburg said. "We are simply letting nature take its course."
林德伯格说：“生产间隔时间越长，第二胎成活的可能性就越小，我们只能听天由命了。”
3·The microfilament, ribosomes an keratohyalin granules increased and the glycogen decreased as the fetus developed.
随着胎龄的增加，微丝束、透明角质颗粒、核蛋白体增加，糖原逐渐减少。
4·Methods: Serial histological sections of 45 human embryos and fetus were performed to observe the development and organization of the contents of the compartment.
方法：对45例不同胚(胎)龄时期的鞍旁结构行组织学连续切片，观察鞍侧腔壁结构及其内容物的形态学变化过程。
5·It was showed that the neuron density during the growing period of human fetus decreased as the illinear form, especially 6 month.
结果显示：锥体层神经细胞密度随胎龄增长呈非直线型下降，尤以6月龄组下降最为明显；