去年12月，美国北卡罗来纳州的罗利市将一处室内公共停车场当作LED的试验场地（下面两张照片是前后对比效果）。
Last December Raleigh, N.C., turned one floor of a municipal parking garage into a testing ground for LEDs (see the before-and-after photos at cree.com/LEDcity).
每一只不起眼的抽屉也是美丽的；前后左右四个面用燕尾榫依次连接，前面和两侧分别使用差别明显的木料，以造成对比的效果：浅色橡木可以配紫檀木，桃花心木可以配白蜡木。
Each humble drawer, too, was beautiful, with sides and front in deliberately contrasting woods linked by dovetails: light oak into rosewood, mahogany into ash.
介绍了改进后供胶装置的结构及工作原理，并对改进前后的使用效果进行了对比。
The glue applicator was improved. The structure and principle were introduced, and the performance before and after improvement was compared.
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