作为需求力量，不仅直接对经济增长起着拉动作用，而且还会通过其他经济变量的作用间接拉动经济增长。
As a demand power, it not only can pull the economy growth directly but also can pull the economy growth indirectly through other economic variable's function.
与间接词汇教学法相比，直接词汇教学法在第二语言学习者增长词汇知识方面，起到了相对大的推动作用。
Compared with implicit vocabulary instruction, direct vocabulary instruction plays a relatively greater role in the vocabulary growth of L2 learners.
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