upstream
英 ['ʌpstriːm]
美[,ʌp'strim]
- adv. 逆流地；向上游
- adj. 向上游的；逆流而上的
- n. 上游部门
考试真题
- A tax on upstream carbon sources is one easy way to put a price on carbon emissions, although some countries may wish to use other methods, such as emissions trading schemes.
出自-2017年6月阅读原文
- Now, instead of swimming upstream, we relax, sleep, watch movies, or listen to music.
2018年12月六级真题（第一套）阅读 Section B