He's been bitten by the travel bug.

他迷上了旅游。

The biting travel bug has reached a whole new level of damage ;).

想去旅行的心就像被小虫咬一样痒，它的破坏力又达到了新的境界了。

Apparently not even a deadly virus can kill the travel bug in some folks.

显然对有些人而言即便是致命的病毒也不可能杀死他们的旅行。

If you've had a case of the travel bug, you know it can strike any time, and the only way to cure it is to succumb to it and travel.

如果你有过旅游癖，你知道它可以在任何时间打击你，只有屈从于它和旅行才能治愈它。

My mum was never really interested in going abroad until she went to America last year. Now she's been bitten by the travel bug and hates staying at home!

直到去年去美国之前我妈妈从来对出国没兴趣，可是现在对旅游简直着了迷，在家里呆不住了！