Understand that like when things go wrong, you've gotta be able to rebook yourself.

要明白，出问题的时候，你必须能够改签。

So, if you missed an appointment, you might say, " I'm so sorry, can I rebook? " .

所以，如果你错过了约会， 你可能会说， “很抱歉，我可以重新预约吗？ ” 。

So, " I had to rebook my trip" , " I had to rebook my trip, which cost an arm and a leg." " An arm and a leg" is an idiom to say something cost a lot of money.

所以，“I had to rebook my trip” ，“我不得不重新预订我的行程， 这花费了我很大的成本” 。“An arm and a leg” 是一个成语， 用来形容某物花费了很多钱。