The present state of development on the MMW technology is not perfect. So there are many lacunaes to be solved.
由于毫米波技术，特别是毫米波成像技术的发展还不是十分完善，所以该技术仍然存在着许多技术问题有待解决。
参考来源 - 毫米波被动成像及图像处理的研究·2,447,543篇论文数据，部分数据来源于NoteExpress
What is the state of development of the technology?
技术目前开发到什么状态？
Twenty years ago, the selling and sales management discipline was in a nascent state of development.
在二十年前，销售和销售管理领域基本是项空白，还处于一种萌芽状态。
Many startups find themselves in a perpetual state of development throughout the first few years of their existence.
许多初创公司发现自己在开始的几年始终处于研发状态。
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State-owned investment company Dubai World,which manages much of the city-state's massive development projects, is asking creditors for a delay in repaying about $60 billion in debt.
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