Its teeth and skeleton lead scientists to believe Spinolestes was a “ground dweller” that survived on a diet of bugs.
查了下字典 a diet of 有很多单一的事物的意思？这里是这个意思么？还是饮食习惯？
Its teeth and skeleton lead scientists to believe Spinolestes was a “ground dweller” that survived on a diet of bugs.
▲live on a diet of 的意思是“以吃……存活”。如：
He lived on a diet of water and tinned fish. 他仅靠喝水、吃鱼罐头过活。
The animals live on a diet of fruit and insect. 这类动物以水果和昆虫为食。
The Irish used to live on a diet of potatoes. 爱尔兰人过去以吃马铃薯为主。
They had to survive on a diet of insects and berries. 他们只好靠吃昆虫和浆果保持生命。
▲更句类似例句：
Cows have a diet of grass. 牛的食物是草。
He was put on a diet of milky food. 他根据医嘱要食用乳制品。
They were fed on a diet of rice and vegetables. 给他们吃的是大米和蔬菜。
The radio had fed him a diet of pop songs. 他从广播里听到的都是千篇一律的时尚歌曲。
▲你的句子意思：它的牙齿和骨骼让科学家相信spinolestes是一种生活在地洞里以吃虫子为生的动物。
