此时，在测试教室，我正在进行一个及其重要的实验组合——父母和婴儿的组合。

Right there, in the exam room, I have that essential experimental combination, the baby and the parent.

youdao

此时，在测试教室，我正在进行一个及其重要的实验组合——父母和婴儿的组合。

Right there, in the exam room, I have that essential experimental combination, the baby and the parent.

youdao