duration
- n. 持续，持续的时间，期间
- [语音学]音长，音延
考试真题
- For example, sleep duration has declined from some eight hours in the 1950s to seven in recent years.
2016年6月四级真题（第一套）听力 Section C
- Participants were balanced across the three groups for age, sex, educational background, severity and duration of depression, and use of antidepressant.
2019年6月四级真题（第三套）阅读 Section C