waiver

参加这次旅行前，所有人都需要签署一份免责声明。

Everyone needs to sign a ___waiver before going on this trip.

在参加攀岩课程之前，每个人都必须签署一份免责声明。

Before taking the rock climbing class, everyone must sign a ___waiver.

由于天气恶劣，主办方免除了参赛费。

The organizers issued a ___waiver for the entry fee due to bad weather.