1. computer（电脑）：a machine which is used for performing calculations automatically
2. plane（飞机）：an aircraft that has a fixed wing and is powered by propellers or jets
3. blackboard（黑板）：a sheet of slate which is used for writing with chalk
4. glass/cup（水杯）：a container which holds water for people to drink
5. hotel（宾馆）：a building where travelers can pay for lodging and meals and other services