- A public vehicle operated on rails along a regular route, usually through the streets of a city.市内有轨电车：沿固定路线开动的公用车辆，通常穿越城市的街道
- photobiology
- photobiotic
- photobomb
- photocell
- photochemical smog
- photochemistry
- photocinesis
- photocoagulation
- photocompose
- photocomposition
- photoconductivity
- photocopier
- photocopier
- photocopy
- photocurrent
- photodecomposition
- photodegradable
- photodisintegration
- photodrama
- photoduplicate
- photodynamic
- photodynamics
- photoed
- photoelectric
- photoelectric cell