We have a class in Chicago asking for civil engineers to teach them how to build a bridge. In Idaho, a class is asking for a scientist to help them build a working river delta inside their classroom.

希德里说：“我们在芝加哥开了一个班，由土木工程师教授他们建造桥梁的知识，在爱达荷州，有个班级请求科学家帮助他们建立一个可在教室内运转的河流三角洲”。

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Scala makes it possible to reuse the new member definitions of a class (i.e. the delta in relationship to the superclass) in the definition of a new class.

Scala允许定义新类的时候重用“一个类中新增的成员定义（即相较于其父类的差异之处）”。

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China's Yangtze River Delta and the genuine world-class leisure resort-type experience, a perfect combination, will enable the tourists to enjoy unprecedented in Wuzhen dream vacation.

原汁原味的中国江南水乡与世界一流休闲体验型度假区完美的结合，将使广大游客在乌镇享受前所未有的梦幻假期。

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On Monday, my colleague, Dave Orrico, upgraded to first class on Delta and got to go ahead of me in line.

FORBES: A Few Key Differences Between Southwest and Delta

More than 800 Delta aircraft, including all Delta Connection two-class regional jets, are equipped with in-flight Wi-Fi service offering more than 400, 000 customers per day access to the internet above 10, 000 feet.

ENGADGET: Delta expanding Gogo in-flight WiFi to select international flights beginning in 2013

In any case, the world-class agriculture in the delta employs advanced seed technology and chemical fertilisers, and does not depend on river-borne sediment of negligible nutrient value.

ECONOMIST: Letters