旅行很累人。用英语怎么说？

旅行很累人。

Travelling is tiring.

travelling

adj. 旅行的，巡回的，旅行用的；n. 旅

例句
It is probably easier to make an analogy between the courses of the planets, and two trains travelling in the same direction.
将行星的运行比作两列火车朝同一方向行驶可能更容易些。

is

vt.& vi. 是（be的三单形式；n. 存在；

例句
Bollinger 'RD' is a rare, highly prized wine.
博林格RD香槟是一种名贵的备受推崇的葡萄酒。

tiring

adj. 累人的，令人疲倦的，麻烦的，无聊的，引起疲劳的；v. （使）疲劳( tire的现在分词)，对（做）某事感到厌倦；

例句
It seems to ease all the aches and pains of a hectic and tiring day.
繁忙劳碌了一天所带来的周身酸痛似乎被一扫而空。