An art critic who constantly carped;

总喜欢吹毛求疵的艺术批评家；

But some investors carped that Microsoft already had the technology to do this, or should have developed it itself, and may soon be overtaken.

但一些投资者埋怨,微软已经拥有这项技术,或者本应该自己开发这项技术,可能很快就会被超越.