短语讲解：

1. Only 10 works of art have sold at auction for more than $100 million.

more than 超过; 不只是; 很; 在…次以上
例句：He supervised and trained more than 400 volunteers.
他指导和培训了400多名志愿者。

2. He died of a drug overdose in 1987 at the age of 27.

die of 死于（疾病、过度悲伤等）; 强烈地感受到…
例句：Her father and her brothers would die of shame
她父亲和她的兄弟们会羞愧死。
at the age of 在…岁时
例句：He'd dropped out of high school at the age of 16
他16岁的时候就从中学退学了。