1. 旅行者;度假者
A tripper is a person who is on a trip or on holiday.

1. a catch mechanism that acts as a switch

e.g. the pressure activates the tripper and releases the water

Synonym: trip

2. a tourist who is visiting sights of interest

Synonym: sightseerexcursionistrubberneck

3. a walker or runner who trips and almost falls

Synonym: stumbler

4. (slang) someone who has taken a psychedelic drug and is undergoing hallucinations