One type of external evidence that may shed light on the transmission of Roman texts is the availability of a work in the Middle Ages, when many classical texts were circulated.

当许多经典文本都在流传时，一种可能有助于罗马文本传播的外部证据是中世纪的一部作品。

youdao

So right know it is basically a luxury or a middle class type of garment right now.

所以眼下它基本上属于一种奢侈品，或是中产阶级人群的服装面料。

youdao

In the Middle East, this type of rapid development is just not technologically feasible.

在中东，此种迅速开发并不仅仅在技术上不可行。

youdao

Max was a middle-class boy who lived in another type of neighborhood, one perched between affluence and despair.

NEWYORKER: Ghosts

The Federal Air Marshal Service officially began in 1968 as the Federal Aviation Administration's Sky Marshal Program, and in the 1970s, extortion-type hijackings in the Middle East led to the deployment of some air marshals overseas.

CNN: STORY HIGHLIGHTS

This would subject the Middle East to the risk of a Chernobyl-type catastrophe.

ECONOMIST: Letters