Cortical microtubules were observed in intraepidermal cells of onion bulb with a thin section and negative staining of protoplasts.

洋葱鳞茎表皮细胞内可见皮层微管，呈薄片状，原生质体染色阴性。

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The section below will be a difficult one to complete, but it is important to try and change negative attitudes you have about yourself into positive ones.

以下的这个环节是比较难完成的一个环节，但是对将你拥有的负面态度转换成积极的态度是十分重要的。

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NASA's Kepler, a mission tasked with scouring a section of the universe in search of Earth-like planets, used its high-powered telescope to take these negative images of space.

美国宇航局的开普勒，以精练的在一个类似地球的行星，寻找宇宙中的第一个使命任务，利用其高功率利用太空望远镜这些负面形象。

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Caused a huge outcry from the osteopathic community who flooded the comments section with negative remarks.

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But if you hone in on only the parts of the survey which you perceive as critical, or if you spend your time trying to figure out who wrote that semi-negative comment in the open-ended section, you are missing the point.

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