贝多芬31岁开始逐渐丧失听力.

Beethoven began to lose the ability to hear at age thirty - one.

创立了“静耳：听力拯救”行动组织，这是一个非营利性组织，旨在预防青少年因噪音丧失听力。

She founded Ear Peace: Save Your Hearing, a nonprofit to prevent noise-induced hearing loss in young people.

这家手语门店将雇佣大约20~25位部分或完全丧失听力的员工。

Approximately 20 to 25 of the partners who will be hired to work at the Signing Store will have partial or complete hearing loss.