The three stages and four combinations are key to successful bilingual education.

双语教学的三个环节和四个结合是双语教学的灵魂和关键。

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The general thought of the construction is "One Transition, Two Wheel Drive, Three Stages and Four Combinations".

嘉兴构建低碳城市的总体思路是“一个转型、双轮驱动、三个阶段和四个结合”；

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This essay gives the reasons for building morality for the routineers and its"four combinations":to insist on the service aim is to combine the responsibility for leaders with that for masses;

本文提出了加强公务员道德建设的原因，以及加强公务员道德建设的“四个结合” ，即：①坚持服务字旨，把对领导负责和对群众负责结合起来；

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The same four essential ingredients - flour,water,yeast and salt - can yield 10,000 different combinations.

VOA: standard.2010.07.16

Because it takes three units where there's only four choices at each position to have at least 20 unique combinations.

因为每个位点上仅有四种可能性,只有采用三个碱基一组,才能取得至少二十种不同的组合方式

耶鲁公开课 - 生物医学工程探索课程节选

How many combinations of codons are there if there's three bases and four possibilities at each base?

那密码子的组合方式到底有几种呢,三个位点,每个位点四种选择

耶鲁公开课 - 生物医学工程探索课程节选

Four of the options involve replenishing the beach and installing different combinations of groynes or, in one case, a rock revetment.

BBC: Clacton sea defence plan 'could cost ?27m'