By doing 还是 By do?

想表达通过 什么 来实现什么?比如是 by setting.... 还是 by set

by doing,因为by是介词,后面加动名词
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第1个回答  2011-11-12
By doing
因为by是介词,介词后的动词要加-ing
第2个回答  2011-11-12
By doing
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