抓的

Sponges, corals and brachiopods (a once-widespread group that looka bit like bivalve molluscs) were particularly badly hit.

海绵、珊瑚、以及&腕足类动物&（一种在地球上广泛分布的看似双壳类的软体动物）的生存就受到了尤为巨大的冲击。

A foghorn that makes a two-tone signal.

发出两种信号的雾号。