以下是在线为同学们整理的英语难句解析，供各位考生参考。
Although some of the more ambitious programs require new investments in servers and networks to support collaborative software, most distance learning courses can run on existing or minimally upgraded systems.
分析主干：courses can run
Although 引导让步状语从句。investment in...表示在......方面的投资。不定式to support... 是宾语investment 的补足语，项目需要投资来支持相关软件support 的逻辑主语不是programs 而是investment，所以该不定式应该是补语，而非目的状语)。译文：虽然一些规模更大的课程需要斥资增加新的服务器、扩建网络来支持配套的软件，但大部分远程教育课程可以在现有的或稍加升级的系统上运行。
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