viable
- adj. 可行的；能养活的；能生育的
考试真题
- In poor, dry regions, untreated wastewater is the only viable irrigation source to keep farmers in business.
出自-2016年6月阅读原文
- Going grass-fed is a safe refuge, a way for family-scale farms to stay viable.
2019年12月六级真题（第三套）阅读 Section B
- In poor, dry regions, untreated waste water is the only viable irrigation source to keep farmers in business.
2016年6月六级真题（第二套）阅读 Section C