She says the current way to identify whether chemicals cause cancer is to test them one at a time.

她说目前确认化学成分是否造成癌症的途径每次对其进行试验。

youdao

To set our heart on one thing at a time and give up all other thoughts is also a good way.

每次只把我们的心放在一件事上，放弃所有其他的想法，也是一个好方法。

youdao

Despite losing everything in his life, his spirit never wavers, and he digs his way to freedom, one spoonful of dirt at a time, over the course decades.

尽管失去了生命所有的东西，他的灵魂从来没有动摇过。在数十年的时间里，一小点一小点地，他挖出了通向自由之路。

youdao

I think most and you are familiar with the Aufbau or the building up principle, you probably have seen it quite a bit in high school, and this is the idea that we're filling up our energy states, again, which depend on both n and l, one electron at a time starting with that lowest energy and then working our way up into higher and higher orbitals.

我认为你们大多数熟悉奥弗堡,或者构建原理，你们可能,在高中见过它，又一次,这是我们填充能级的观点，与n和l有关，一个电子每次从,最低的能级开始,然后以我们的方式上升到,更高更高的轨道。

麻省理工公开课 - 化学原理课程节选

And each person completed it the same way: one step at a time.

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They were trying to find a way to send more than one message at a time along a telegraph wire which was then one of the central technological problems of the day.

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There is a way to quickly move through tweets one at a time using keyboard shortcuts (like jumping through messages in Gmail), but you can only see one update per page -- not really that useful when you follow lots of people.

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