avalanche
n
mass of snow, ice and rock that slides rapidly down the side of a mountain 雪崩; 山崩
Yesterday´s avalanche killed a party of skiers and destroyed several trees. 昨天的雪崩造成一批滑雪者死亡, 并毁坏了一些树木.
(fig 比喻) We received an avalanche of letters in reply to our advertisement. 广告登出後, 我们收到雪片般涌来的大批信件.