Meaning of yòng:
用
to use; to make use of; to employ; (coverb) with; using; to need; to have to (usu. used in the negative or in questions); (courteous) to eat; to drink
Nǐ kěyǐ yòng zhè běn shū lái xuéxí xīn de zhīshì.
你可以用这本书来学习新的知识。
You can use this book to learn new knowledge.
Wǒ yòng zhè zhī bǐ xiězì.
我用这支笔写字。
I write with this pen.
Nǐ yòng bù yòng bāngzhù?
你用不用帮助?
Do you need help?
Lǎorénjiā, qǐng nín mànmàn yòng.
老人家,请您慢慢用。
Dear elder, please take your time to eat.
usefulness; utility; (bound form) expense; outlay
Zhè zhǒng gōngjù fēicháng yǒuyòng.
这种工具非常有用。
This tool is very useful.
Wèi le yī chǎng lǚxíng, tāmen jìhuà le suǒyǒu de yòngxiàng.
为了一场旅行,他们计划了所有的用项。
For a trip, they planned all the expenses.
(literary) hence; therefore
Kàn dào zhè zhǒng qíngkuàng, tā xīnqíng fùzá, yòngle yī zhěng tiān qù sīkǎo.
看到这种情况,他心情复杂,用了一整天去思考。
Seeing this situation, he felt complicated, hence he spent the whole day thinking.