the dog's bollocks的含义是最优秀的人（或物）；最好的人（或物）

【例句】
I used to think this band was the dog's bollocks when I was a kid. They're pretty embarrassing to listen to as an adult, though.
当我还是个孩子的时候，我曾经认为这个乐队是最优秀的。不过，作为一个成年人，他们听起来还是很尴尬的。

That coffee latte she bought for me this morning was the absolute dog's bollocks.
她今天早上给我买的拿铁咖啡真的是最棒的。