惊跳反射在经常俯趴的婴儿身上并不多见，尤其是趴在妈妈身上的。

Startles don't usually happen when a baby is already on solid ground, especially on your chest.

youdao

惊跳反射在经常俯趴的婴儿身上并不多见，尤其是趴在妈妈身上的。

Startles don't usually happen when a baby is already on solid ground, especially on your chest.

youdao