Three were kept as controls and fed unlabelled blood.

其中三只被作为对照，并被喂食未标记的血液。

The wildness attracts undesirable characters: on the South Beach shore a middle-aged man offers a teenager an unlabelled bottle of " champagne" .

荒野吸引了一些不受欢迎的人物: 在南海滩的岸边，一个中年男子给了一个少年一瓶没有标签的“香槟”。