And so far, this green sea slug is the only known animal that can be truly considered solar-powered, although some animals do exhibit some plant-like behaviors.
2019年12月四级真题(第三套)阅读 Section C
柯林斯高阶英汉双解学习词典释义
N-COUNT
蛞蝓;鼻涕虫
A slug is a small slow-moving creature with a long soft body and no legs, like a snail without a shell.
N-COUNT
(酒的)一大口
If you take a slug of an alcoholic drink, you take a large mouthful of it.