The hacktivists may do most damage by providing cover for more sinister efforts.

黑客活动因为为一些更为恶性的行为提供屏蔽而造成了更多伤害。

Then there are the spatterdock plants, which provide cover for frogs and fish and whose seeds are eaten by ducks—yum.

然后是萍蓬草，它为青蛙和鱼提供掩护，它的种子被鸭子吃了——真好吃。