adj.胎儿的，胎的

The baby's heartbeat could be heard during the ultrasound, indicating its foetal stage.
这个句子的意思是：超声波检查中可以听到婴儿的心跳，表明它处于胎儿阶段。
During pregnancy, the foetal brain undergoes rapid development and maturation.
孕期胎儿的大脑正在经历快速发育和成熟的过程。
Foetal alcohol spectrum disorder (FASD) is a serious condition caused by prenatal exposure to alcohol.
这句说的是：胎儿酒精谱系障碍（FASD）是由孕期酒精暴露引起的一种严重状况。
Expectant mothers often attend foetal classes to learn about proper nutrition for the growing foetus.
这句话表示：孕妇通常会参加胎儿课程，学习如何为成长中的胎儿提供适当的营养。
The doctor monitored the foetus closely to ensure its health throughout the pregnancy.
医生密切监测胎儿，以确保其在整个孕期的健康。
Ultrasound technology allows obstetricians to assess the foetal position and size during pregnancy.
这句话说明：超声技术让产科医生能够在孕期评估胎儿的位置和大小。
A pregnant woman may experience morning sickness, a common symptom of the foetal stage.
这句话指出：孕妇可能会经历晨吐，这是胎儿阶段常见的症状。
Foetal development milestones include the formation of recognizable facial features around the 12th week.
这句话提到：胎儿发育里程碑之一是在第12周形成可辨识的面部特征。
In some cases, doctors perform a foetal echocardiogram to diagnose heart problems early on.
有些情况下，医生会进行胎儿超声心动图，以便尽早诊断心脏问题。
After a miscarriage, it can take time for a woman's body to fully recover from the loss of the foetus.
这句话表示：在流产之后，女性的身体可能需要一段时间才能从胎儿的丧失中完全恢复。