I'd just arrived at the conference and hadn't had time to book in.我刚刚到达，还没来得及办理入住登记手续。I got my boarding pass and checked my suitcase.我已经办理了登记手续，也托运了行李。With backpacks and sleeping bags they checked into a campground for the night.他们携着背包和睡袋到一家露营园办好了住夜登记手续。