They mainly use their phones to email friends, listen to music and surf the Internet.

他们主要用手机发邮件、听音乐和上网。

youdao

I mainly use books as a guide for what to try next, assuming the principles seem sound and mesh with my current level of understanding.

书里的原则如果跟我现在的理解水平相契，便主要用来引导下一步的方向。

youdao

In this application, since we're usually just deleting the rows of old data and creating rows with the new data, we mainly use a row-based feed.

在这个应用程序中，由于我们通常都只按行删除旧数据并按行添加新数据，所以我们主要使用基于行的提要。

youdao

Americans know about them mainly from a history of use as pack animals in Arizona and other areas of the desert Southwest.

VOA: special.2010.02.16

Our bodies have mechanisms like that, that mainly use the principle of negative feedback in order to control the parameters that are important for life within a certain range.

我们的身体有着与之类似的机制,主要依靠负反馈原理来,将与生命息息相关的指标控制在一定范围

耶鲁公开课 - 生物医学工程探索课程节选

You can use them mainly to soften your speech.

你可以用它们来柔化你的言辞。

Would you 课堂 - SpeakingMax英语口语达人

Some 60% of tablet users (and 61% of smartphone users) say they mainly use the browser for reading news.

FORBES: More Mobile News Consumers Choosing Web Over Apps

Fully 60% of tablet news users mainly use the browser to get news on their tablet, just 23% get news mostly through apps and 16% use both equally.

ENGADGET: Pew Research finds 22 percent of adults in US own tablets, low-cost Android on the rise

Coal prices have doubled since the beginning of 2009 - largely thanks to strong demand from China and India, mainly for use in the steel industry.

BBC: Australian miner Fortescue in tax plan threat