- A portable device consisting of a microphone attached to a loudspeaker, used especially to amplify the voice.手提式扩音器：一种便携的由麦克风和扩音器连在一起的设备，专用来扩大声音
- photoreaction
- photo-realism
- photoreception
- photoreceptor
- photoreconnaissance
- photorefractive
- photorespiration
- photos
- photosensitive
- photosensitivity
- photosensitization
- photosensitize
- photoset
- photoset
- photosphere
- Photostat
- photosynthate
- photosynthates
- photosynthesis
- photosynthesis
- photosynthesize
- phototaxes
- phototaxies
- phototaxis
- phototaxy