英语语法分析

Yet this technology remains unproved.

而这一技术还没有得到验证。

So for more than 30 years, the runner's high remained an unproved hypothesis.

所以30多年来，跑步者兴奋一直作为一项未经证明的假说。

But its ability to help Google expand in the mobile-ad market remains unproved.

但Android能否帮助谷歌进军手机广告市场仍未可知。