英德
有道
百度
谷歌
图片
维基
百科
生效的
efficient
operant
operant
- 首先是于2003年生效的不让一个儿童落后法案，要求每州给所有学生进行标准测试来衡量学校教育的进步。
First there was No Child Left Behind, which took effect in 2003 and required states to give all students standardized tests to measure school progress. - 这中做法令实际生效的网络拓扑结构比较接近数学家所谓的“树”：任意两个节点之间只有少于等于一条通路。
This makes the effective network topology look like what mathematicians call a tree: a graph where there’s no more than one path between any two points. - 这种注释是在一个根实体实例从数据库加载到一个持久化上下文时生效的，用来判断有哪些属性或其他实例还需要加载。
Such decorations take effect when a root entity instance is being loaded from the database into a persistent context to determine which properties or other instances should be loaded as well.
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中国词汇量第二的英语词典
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