Long-distance trade in obsidian probably gave the elite residents of Teotihuacán access to a wide variety of exotic good, as well as a relatively prosperous life.
黑曜石的长途贸易可能给特奥蒂瓦坎的精英居民提供了各种各样的异国商品，以及相对富裕的生活。
2
It asks home and distance users for validation, such as a library card number or student id before allowing access.
代理掀询问本地或远程用户进行信息确认，比如图书证号或学号，再判断是否允许访问。
3
To explore the relationship between homestead distance to hospital and access to care and to estimate the sensitivity of hospital-based surveillance in Kilifi district, Kenya.