biparietal diameter of fetus

例句：

1. 1. The fetus's biparietal diameter is measured to determine its growth and development.
   胎儿的双顶径被测量以确定其生长和发育。
2. 2. During the first trimester, the biparietal diameter of the fetus increases rapidly.
   在第一个孕期，胎儿的双顶径迅速增加。
3. 3. The biparietal diameter is a critical indicator of fetal health and can reveal potential issues before they become evident.
   双顶径是评估胎儿健康的关键指标，可以在问题显现之前揭示潜在问题。