长期不吃新鲜水果会导致坏血病，症状包括牙龈出血和乏力。

Not eating fresh fruits for a long time can cause ___scurvy, with symptoms like bleeding gums and weakness.

用如此卑鄙的手段欺骗老人真是下作。

It was a ___scurvy act to deceive the elderly like that.