尽管油漆通常是用嘴喷上去的，但我们可以假定惯用手在操作中起了辅助作用。

Even though the paint was often sprayed on by mouth, one can assume that the dominant hand assisted in the operation.

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先进的技术通常是一把双刃剑，它可以给人们带来好处和危害。

Advanced technology is usually a double-edged sword, which can bring people both benefits and harms.

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玉米饼通常是扁圆的，但也可以把它们做成其他形状。

Tortillas are usually flat and round, but they can also be made into other shapes.

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Hormones can be proteins, endocrine hormones can be proteins, meaning they're large molecules that are usually fairly water soluble, or they can be steroids.

激素可以是蛋白,内分泌激素可以是蛋白,这意味着激素是大分子,并且通常是水溶性的,激素也可以是类固醇

耶鲁公开课 - 生物医学工程探索课程节选

You can still in France today find not canine butchers, you can find horse butchers, and it's always a red front with a gold head of a horse, appropriately enough.

现在,在法国,你仍然可以看到杀马的屠户,通常都是红色门面上贴着个金色的马头,十分相称

耶鲁公开课 - 1871年后的法国课程节选

Now, normally that's a good thing because if you're out in the world and you get infected with adenoviruses you recover from it, your immune system can get rid of it.

通常情况下这是好事,这可以让暴露在户外的你,免于腺病毒的侵害,你的免疫系统可以清除病毒

耶鲁公开课 - 生物医学工程探索课程节选