These scholars have contended that from 1794 to roughly 1830, American inventors were unable to enforce property rights because judges were "antipatent" and routinely invalidated patents for arbitrary reasons.
specific; 定位At the empirical level Clark shows how a change at the telephone exchange from maintenance-intensive electromechanical switches to semielectronic switching systems altered work tasks, skills, training opportunities, administration, and organization of workers.
Removing the boxes will reduce the number of prank calls without hampering people's ability to report a fire.
重点是 without hampering people's ability to report a fire.
A直接就告诉你是答案啊 traces all alarm calls made from private telephones and records where they came from
carcass 屠宰后的畜体