请解释journey,trip,travel,tour的区别

Voyage:一趟旅程,尤指海上之旅
Many are finding that the most pleasant way to travel is a voyage on a cruise ship.
许多人认为最痛快的旅行方式,是搭乘游轮,来一趟逐波之行.
journey主要指单程较远距离的海、陆、空“旅行”,表示“去旅行”时,英语该说goon a journey,而不说go to a journey
Mr.Smith made a journey from Paris to New York.史密斯先生作了一次从巴黎到纽约的旅行.
A pleasant journey to you.祝你一路平安.
travel一般指到国外或远方旅行,它同journey不同之处,在于不着重某一目的地,有到各地“游历”的意思,作名词时常用复数形式.
He has just returned from his travels.他刚刚旅行回来
One day in his travels in China,he got to Guangzhou.他在中国旅行期间,有一天他到达广州．
trip常指短距离的,直达目的地的旅行,在日常用语中,trip可与journey通用.
I am going on a trip to the seaside during the summer holidays.暑假期间我将去海边旅行.
He went on a trip journey to Paris.他到巴黎旅行去了.
tour“旅行,周游,观光”,主要目的地是游览或视察,距离可长可短,常带有“最后回到出发地”的含义.
He is making a tour of the world.他周游世界去了.
They spent two months on a tour through most of the countries of Europe.他们用了两个月的时间去旅行,游历了欧洲的大部分国家.