If there is no markup around the text in a different language, use a span element to delimit the boundaries. Here is an example in XHTML 1.0 served as text/html:
<p>The title in Chinese is <span lang="zh-Hans"
xml:lang="zh-Hans">中国科学院文献情报中心</span>.</p>
Version: $Id: Slide0170.html,v 1.3 2006/02/02 10:05:47 rishida Exp $