热水瓶
Meanings
1. thermos bottle (classifier 個|个 ge4)
2. vacuum bottle
3. hot water dispenser (appliance)
Characters used
Examples2
学校
The school won't turn on the air conditioning, so the students are going to throw their hot water flasks off of the balcony in protest.
当然，
Obviously, we don't know if those thermos flasks are their own.