重点讲解:
1. be descended from 是…的后代的;为…的后裔的;
She told us she was descended from some Scottish Lord.
她告诉我们她是某苏格兰勋爵的后裔 。
2. to date 迄今;到目前为止;
The exhibition contains some of his best work to date.
这个展览有他迄今为止一些最好的作品 。
3. trace back 追溯;查考;
Britain's Parliament can trace its history back to the English Parliament of the 13th century.
英国议会的历史可以追溯到 13 世纪的英格兰议会 。
4. arise from (由…)产生,引起;
Emotional or mental problems can arise from a physical cause.
身体上的原因可以引起情绪或精神上的问题 。
adj. 不平常的,异常的