服务是为在单一区域对象上超越简单CRUD操作的方法而准备的。
Services are for methods that go beyond simple CRUD operations on a single domain object.
同一区域内还有一种比较小的，3英尺长的鳄鱼，长着龅牙，咀嚼植物和幼虫为食。
And a smaller, 3-foot-long relative with buckteeth was chomping plants and grubs in the same region.
精神卫生保健在这一区域的大多数国家里均以传统的经典精神病学为基础，但往往只有很少的精神科医生。
Mental health care in many of these countries is based on traditional classical psychiatry but often they have very few psychiatrists.
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