Mainly use jeans button, snap button, rivet and eyelet.

大多用工字钮，四合钮，铆钉以及金属圈。

youdao

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

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