Shanghai is a bustling first-tier city.

上海是一个繁华的一线城市。

Beijing is one of the first-tier cities in China.

北京是中国的一线城市之一。

First-tier cities usually have more opportunities and resources.

一线城市通常有更多的机会和资源。

The cost of living in a first-tier city is very high.

一线城市的生活成本很高。

Many people dream of finding a job in a first-tier city.

很多人梦想在一线城市找到工作。

First tier (second tier, third tier, etc. ) deckhouse

第一层（第二层、第三层等）甲板室

There was no first tier evidence.

并无第一级证据。

The first tier is the data collection.

第一层是数据采集。

Hawk Eye - Moved to first tier, where Deflection was.

眼-移到了生存系的第一层，原偏斜的位置。

Outside of first tier cities, the cost of living is far cheaper in China.

在中国，如果是在一线城市以外的地方，那生活成本会低很多。