The use of ultrasonography in the detection of birth defects The prenatal diagnosis of 21-trisomy and 18-trisomy by ultrasonograghy是什么意思_The use of ultrasonography in the detection of birth defects The prenatal diagnosis of 21-trisomy and 18-trisomy by ultrasonograghy在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句