anencephalus

例句：

1. 1. The baby had anencephaly and was born with a largebrain.
   这个婴儿患有无脑症，出生时大脑很大。
2. 2. The doctors found thecause of the child's anencephaly and treated it accordingly.
   医生们发现了孩子无脑症的原因并进行了相应的治疗。
3. 3. Anencephaly is arare condition that can lead to serious healthproblems.
   无脑症是一种罕见的状况，可能导致严重的健康问题。