He observes keenly, but says little.

他观察敏锐，但言语寥寥。

《牛津词典》

He utilizes the facts he observes to the fullest extent.

他最大限度地利用他观察到的事实。

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He observes several trends.

他观察到几种趋势。

youdao

he observes,pointing to the very substantial cuts in air pollution emissions during the 2008 summer Olympics in the Beijing metropolitan area.

VOA: standard.2010.04.07

And he walks out into the farmyard and he observes 20 heads and 56 legs.

这个农场主有一群猪--这是漫长的一天,一群猪和一群鸡。

麻省理工公开课 - 计算机科学及编程导论课程节选

"Because it's a niche market, five or six people can have a huge effect, "he observes.

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Nickelodeon, another Viacom property, "has a whole network of these old shows, " he observes.

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Europe may have the most sophisticated art, but most people are not a part of it, he observes.

ECONOMIST: A jubilant Cuban dance company returns to Britain