One worry is that constellations of nanosats will mean a big increase in space junk; but, operating in low-Earth orbit, they burn up on re-entry after a year or so.

其中一个担忧是一群微型卫星就意味着太空垃圾大量增加，但是，如果在近地轨道运行，这些卫星就会烧掉或者一年后重新进入轨道。

youdao

For any customer around the world, they're getting off oil, so that's a big part of it."

VOA: standard.2010.07.30

They appear in food in pretty small amounts which is why they're the micronutrients;, but they're vital for health, so if you're deficient in micronutrients you've got big problems.

它们在食物中所占比重很小,这也是称它们为"微量元素"的原因,但它们对健康的意义却是至关重要的,如果缺乏微量元素的话会很糟糕

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

And--and each of these companies owns thousands and thousands of brands and products, so they're very big and very powerful, but it's interesting that we think that the United States food companies are governing the world market.

这里提到的每家公司,都拥有数以千计的品牌和产品线,它们的发展都非常壮大,有意思的是,我们以为,美国的食品公司引领着全球市场

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

Just because they're so big doesn't mean they're so strong.

FORBES

And also when you have banks playing such an important role it turns out banks are enormous, they're so big that when they get into trouble even governments like the Spanish government find it very difficult to afford to bail them out.

BBC: The numbers of the year 2012

These devices are only going to get larger until they reach a point where they're so big that consumers start turning their noses at them.

CNN: iPhone under assault from big-screen rivals