I couldn't work out the numbering system for the hotel rooms.

我搞不清楚酒店房间的编号系统。

《牛津词典》

The hotel chain has recently installed a new booking system.

这家连锁旅馆最近安装了新的预订系统。

《牛津词典》

All the hotel group provides is its brand and its online reservation system in return for a cut of the takings.

所有的酒店集团只需提供品牌和在线预订系统，就可以从收入中分得一杯羹。

youdao

Instead of screen scraping the hotel reservation system and calling it a mobile app, a system of engagement presented on a smartphone will know that a guest has entered the lobby for the first time and probably wants to check in.

FORBES: A Billion Smartphones Require New Systems Of Engagement

The hotel had no sprinkler system fitted and Mr Hughes said he was concerned hotels could still carry out their own fire risk assessments.

BBC: Penhallow fire victims' relative wants safety changes

He said that Izak Senbahar, the Mark's owner, resisted the temptation to introduce Jurassic Flower to the hotel's ventilation system and thus guests' rooms, limiting it to the hallways.

WSJ: On the Scent of Luxury With an Upper East Side Perfumer