By this way 是：
“借着这种手段、方式”
By this way ＝ by this means
in this way:用这种方法,这样,因此
例：The work should be done in this way.
应该这样做工作.
而且一般都说in this way
老外很喜欢问in what way can you .
……by this way没有听过