1. 盲沟：止水带 water stop tie | 盲沟 blind ditch | 泻水洞 drain cavern; drain tunnel
2. 暗沟：blind deposit 隐伏矿床 | blind ditch 暗沟 | blind dowel 合缝钢条
3. 暗沟,阴沟：5. blind competition 盲目竞争 | 6. blind ditch 暗沟,阴沟 | 7. blind copy 不填数副本
4. 盲沟,暗沟：blind deposit ==> 隐伏矿床 | blind ditch ==> 盲沟,暗沟 | blind door ==> 百叶门,假门