升级
shēng jí
to escalate (in intensity), to go up by one grade, to be promoted, to upgrade (computing)
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他是中产阶级的人。
tā shì zhōng chǎn jiē jí de rén。
He's a middle class guy.
公司没有给她升职，所以她辞职了。
gōng sī méi yǒu gěi tā shēng zhí， suǒ yǐ tā cí zhí le。
The company didn't give her a promotion, so she resigned.
他是一名中产阶级的白领。
tā shì yī míng zhōng chǎn jiē jí de bái lǐng。
He is a middle-class white-collar worker.
她来自一个中产阶级家庭。
tā lái zì yī gè zhōng chǎn jiē jí jiā tíng。
She comes from a middle-class family.
这座城市有很多中产阶级的人。
zhè zuò chéng shì yǒu Hěn duō zhōng chǎn jiē jí de rén。
There are a lot of middle class people in this city.
在这个城市里，中产阶级占据了很大的比重。
zài zhè ge chéng shì lǐ， zhōng chǎn jiē jí zhàn jù le hěn dài de bǐ zhòng。
In this city, the middle class occupies a large proportion.