Once designed, hardware is difficult and expensive to change.
硬件一旦设计完毕，要修改是困难的，并且花费也大。
Our country's old professional technician management system was once designed for planning economy.
推行执业资格制度是我国转变专业技术人员管理方式的重要内容之一。
That is the foreman's responsibility, and construction begins only once everything has been designed.
这里是包工头负责指挥，并且建筑直能开工一次，那么一切设计就被完成了们。
The research is so designed that once begun nothing can be done to change it.
这项研究设计得如此好以致一旦开始任何事都不可能改变它。
Once a website is designed, more time is spent on writing than anything else.
对于网站设计，花在文案的时间比其余事件要多。
Once a website is designed, more time is spent on writing than anything else.
对于网站设计，花在文案的时间比其余事件要多。
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