"巨婴" 用英语叫 "giant baby"。这个词来源于医学领域，指的是出生时体重超过 4 公斤（约 8 磅 14 盎司）的新生儿。
例句：
"The baby was born at 10 pounds, making him a giant baby." (这个婴儿出生时体重 10 磅，是一个巨婴。)
"The mother was shocked to see that her baby was a giant baby, weighing in at over 9 pounds." (母亲看到她的婴儿是一个巨婴时非常吃惊，体重超过 9 磅。)
"Giant babies are at a higher risk for certain health comppcations." (巨婴更容易患上某些健康问题。)