The writing is clearly on the wall. If we do nothing about it, we shall only have ourselves to blame.凶兆显而易见。如果我们对此毫无行动，就只能怨自己了。The familiar spectre of drought and famine has reared its ugly head again.人们所熟悉的干旱和饥饿的凶兆已经再度出现。The bat is sometimes seen as a symbol of ill omen.蝙蝠有时被看作凶兆的象征。The auguries of death are fast gathering round his head.死亡凶兆迅速地在他脑海中盘旋。