If you really can't go without XHTML, try to optimize it as much as possible.
如果您确实不得不使用XHTML,试着尽可能对它进行优化。
How will you optimize your website for search engines if you don't know what keywords to optimize it for?
如果你不知道要为什么关键字做优化,那么要如何在搜索引擎上优化你的网站?
The next step in our research is to focus on the performance and characteristics of the cooling system which will be measured with an extensive system of sensors, in order to optimize it further.
我们研究的下一步将关注于冷却系统的效能和特性,使用一套扩展传感系统来检测它,以此进一步改良。
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