The ink of cuttlefish beclouded the water. 墨鱼汁把水弄黑了。
When there is a gap between one's real and one's declared aims, one turns as it were instinctively to long words and exhausted idioms, like a cuttlefish squirting out ink. 当一个人的真实目的与他声称的目的不一致时，他就会很自然地就会使用那些错误无理的词句，就像一条墨鱼在吐墨汁一样。
