... stepped lens 阶梯透镜，分步透镜 stepped sector 阶梯遮光板 stepped slit 阶梯狭缝 ...
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·2,447,543篇论文数据，部分数据来源于NoteExpress
Where government has failed to provide, the private sector has stepped out of the way.
FORBES: Rich And Retired
After 20 years of war laid waste to much of the place's infrastructure, it was the private sector that stepped in.
ECONOMIST: Somalia
In notable economic news this week, private-sector employers stepped up hiring in December, offering further evidence of underlying strength in the economy.
FORBES: Weekly Market Wrap
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