这些游客是来自欧洲的旅行团。

These ___tourists are a tour group from Europe.

安全装置中的跳闸器会在电流过载时自动切断电源。

The safety ___tripper automatically cuts off power when the current is overloaded.

公园里那个自言自语的人看起来像个迷幻药使用者。

The guy talking to himself in the park looks like a ___tripper.