科学家正在考虑对大象进行节育，包括对公象做切除输精管手术。

Boffins are pondering birth control for elephants, including even vasectomies.

youdao

科学家正在考虑对大象进行节育，包括对公象做切除输精管手术。

Boffins are pondering birth control for elephants, including even vasectomies.

youdao