Gray-collar workers : Skilled technicians; employees whose job descriptions combine some white- and some blue-collar duties.

灰领工人 ：技术员，其工作职责兼有白领和蓝领的职责。

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There is no danger to our working men from the coming of skilled workers or of trained and educated men.

VOA: special.2010.05.20

Differences between budgets, equipment and the availability of skilled workers have created uneven quality from lab to lab.

VOA: special.2009.10.03

Pay was poor in Britain, and these skilled workers could get much more money in America.

VOA: special.2010.05.13

In contrast, 32% indicated that they had done some restructuring of the IT department, and nearly half of those companies had built new roles related to cloud computing, such as workers skilled in building private clouds or departmental liaisons who understand the needs of various lines of business.

FORBES: Majority of Companies Expanding Cloud Computing Skills: Survey

Mr. ALEX TABARROK (Professor, Economics, George Mason University): It's technology, computers and robots, which have raised the wages of high skilled workers and pushed down the wages of low skilled workers.

NPR: Economists Untangle Truth About Jobs, Immigration

Low-skilled workers in developed economies are losing out relative to skilled workers.

ECONOMIST: The rich nations no longer dominate global production