i am always interested in traveling. my reasons are quite (extremely) simple and clear. if anybody is not satisfied with my viewpoint(s), i shall be greatly surprised at his ways of thinking.
in the first place, traveling increases our knowledge. only by traveling can we see (因為用(only)開頭，主動詞須顛倒)things outside our home town.
in the second place, traveling is good to our health. while we are traveling, we usually exercise our bodies.
in conclusion, i earnestly hope that everybody must seize (grasp at) the opportunity of traveling.
我對旅行終是感覺有趣。我的理由非常簡單時了。如果任何人對我的觀點不滿意的話，我將對他的想法會大大吃驚。
旅行增加我們的知識。只有藉旅行我們可以看到我們故鄉以外的東西。
旅行對我們的健康有益。當我們旅行的時候，我們通常運動我們的身體。