by way of的用法例句!

y way of 有三个意思,请看下面的解释和例句：1.路经,途经（某处）They are travelling to France by way of London.他们经伦敦去法国2.作为; 当作Let's eat out tonight,by way of a change.咱们今天晚上到外面去吃饭吧,换换口味.What are you thinking of doing by way of a holiday this year?今年的假期你打算怎麽过?By way of an introduction,I shall explain some of the historical background.作为开场白,我来解释一下历史背景.3.意在或为了（做某事）make enquiries by way of learning the facts of the case 为了解实情作调查.