最近讀了關(guān)于中國(guó)人口普查的幾篇文章，里面積累到了幾個(gè)詞匯。

《經(jīng)濟(jì)學(xué)人》的這一篇中，是這樣寫(xiě)的：
As people move in search of opportunities, they are redrawing China’s map. The rust-belt provinces in the north-east lost millions of younger residents over the past decade, while prosperous coastal areas, notably Guangdong and Zhejiang, gained millions.

當(dāng)人們涌入尋找機(jī)會(huì)時(shí)，他們?cè)谥厮苤袊?guó)的地圖。東北老工業(yè)帶省份在過(guò)去10年流失了幾百萬(wàn)的年輕人口。而富裕的沿海地帶，主要如廣東、浙江則流入了幾百萬(wàn)人口。

東北老工業(yè)帶就是rust-belt

oxford 詞典上是這樣解釋的：rust-belt is a region that used to have a lot of industry, but that has now decreased in importance and wealth, especially parts of the northern US where there were many factories that have now closed.

Merriam-Webster上是這樣解釋的：rust belt is the northeastern and midwestern states of the U.S. in which heavy industry has declined. 指曾以重工業(yè)為主美國(guó)東北部和中西部地區(qū)，但現(xiàn)在都衰落了。

這種情況和中國(guó)的東三省老工業(yè)基地一樣，都是曾經(jīng)的重工業(yè)基地，但隨著經(jīng)濟(jì)的轉(zhuǎn)型，地位和產(chǎn)業(yè)都衰落了。

Rents in the northeast, which are more directly determined by actual supply and demand for lodging, tell a different story. In Harbin and Dalian, monthly rents per square meter have barely budged in the past decade—in contrast to the approximate doubling in tier one markets like Shanghai, Beijing and Shenzhen.

由實(shí)際的住房供需來(lái)決定的房租，在東北卻是另一番景象。在哈爾濱、大連每平米月租金在過(guò)去10年幾乎沒(méi)怎么變化。而與此相反，租金在一線市場(chǎng)如上海、北京和深圳卻租金卻幾乎翻倍。

tier one market 一線市場(chǎng)

那我們常見(jiàn)的”一線城市“則為 first-tier cities,  “二線城市”則為second-tier cities. 

除此之外，一線、二線城市還可以說(shuō)成 tier-one cities, tier-two cities.

tier 等級(jí)；排；層；行；列