He made each turtle stand on another one's back. And he piled them all up in a nine-turtle stack.

他让乌龟一个站在另一个背上，让九只乌龟堆叠起来。

youdao

He made each turtle stand on another one's back. And he piled them all up in a nine-turtle stack.

他让乌龟一个站在另一个背上，让九只乌龟堆叠起来。

youdao