The family left Russia in 1919. So, the revolution, I think, starts in 1917. And things are quite complex in those early days, so there's more than one anti-czarist factor.

他们在1919年乘飞机离开的，改革，应该始于1917年，早期的时候非常复杂,不止是因为反对沙皇。

耶鲁公开课 - 1945年后的美国小说课程节选

fib Roughly speaking, the analysis of fib is actually quite complex, of a recursive fib.

简单的说,递归的fib的分析实际上非常复杂。

麻省理工公开课 - 计算机科学及编程导论课程节选

It is really massively intra-connected and quite a complex structure.

大脑内部连接十分庞大,结构比较复杂。

斯坦福公开课 - 7个颠覆你思想的演讲课程节选