marine的记忆技巧:词根mar指“海的”例句1、Pollution can harm marine life.污染会危及海洋生物。2、Marine mammals generally swim with the current.海洋哺乳动物一般顺水而游。3、Marine life was discovered at depths previously thought to be azoic.在先前被认为没有任何生命迹象的海洋深处发现了海洋生物。