英语语法分析

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

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。

The Sichuan Reproductive Faculty Hospital in Chengdu has performed more than 30 procedures to reverse tubal ligations and vasectomies for quake parents.

位于成都的四川生殖专科医院已经为灾区的父母施行了30多例输卵管复通术和输精管重建术。

He discussed the issue at a support group meeting of men with dementia, and it turned out that eight of the nine men in the room with PPA had had vasectomies.

他在一次痴呆男性患者援助小组会议上对该问题进行了探讨，最终发现9名PPA男性患者中有8名患者同输精管切除术相关。