1. “check in ”意为“登记，报到”。但是在不同的语境，翻译有所不同。在上文中具体指“办理登记手续”。
eg. Passengers should check in for flight BA125 to Berlin.
去柏林的英航125航班旅客请办理登记手续。
eg. Where do I check in my code?
我该把代码检入到哪里？
eg. Merge down the latest from the work branch, and check in your code.
从工作分支中取得并合并最新的代码，然后检入你的代码。
2. pack up 整理；把……打包
eg. Pack up your family and move to a less stressful environment.
带上你的家人搬去一个压力小的环境当中。
eg. Once you've managed to pack up your home, try to celebrate this new stage in your life. Call a friend.
如果准备整理屋子，就试着为自己新的生活庆祝。
eg. Lets pack up and start at once.
让我们整理好行李立刻出发。
