热水瓶

学校不给开空调，学生们就会从阳台上扔热水瓶抗议。

學校不給開空調，學生們就會從陽臺上扔熱水瓶抗議。

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，那些热水瓶是不是他们自己的就不得而知了。

當然，那些熱水瓶是不是他們自己的就不得而知了。

Obviously, we don't know if those thermos flasks are their own.