n. the quality of being intricate and compounded
n. 复杂, 复杂性, 复杂的事物
1. The complexity of this math problem surprised the students.
这个数学问题的复杂性让学生们感到惊讶。
2. Understanding the complexity of human emotions can be challenging.
理解人类情感的复杂性可能是一个挑战。
3. The project was delayed due to its unexpected complexity.
由于项目的意外复杂性，进度被延迟了。