At last, the back profile of the primary mirror is optimized.

最后对主镜的背部轮廓形状进行了优化。

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Sure the F3 was more ergonomic, but the 3N gets back to a profile that's more like the ever-aging C3 (a continuing staff favorite).

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At a developer conference, Mr. Zuckerberg unveiled features that include a "Like" button that other websites could add to allow users to share information back on their Facebook profile pages.

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Although not her motivation for doing them, advocacy and giving back have built her public profile and enriched her life.

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