急！求翻译！！！！！！

he assumed effect is the selective absorption of light by intracellular antenna molecules ！“by”到底怎么用的？？？？？？

这种效果可能是由于细胞内部分子产生的选择性的吸收光的作用

By 简单来说就是通过的意思，一般常表示使用什么方法途径之类的，举个简单的例子吧

I hit him by a stick  我用一根棍子打他。。。。。

好像这例子有点弱智，但就是这个意思

什么啊?

他认为效果是选择性吸收的光通过细胞的蛋白质分子。天线

1）表示以一般的方法或方式。如： No one in those days could live by writing poems. （2）表示传达、传递的方式或煤介。如： How did you send the letter, by airmail or by ordinary mail? （3）表示用交通工具、通讯工具后接名词单数，不加冠词。如： He came by train, but his wife came by bus. 注意下面两句的区别： Did you come by train? Did you come in his car / on my bike? “by +抽象名词”构成的词组有：by accident / by chance / by diligence / by effort / by force / by heart / by luck / by mistake / by hard work.