及物动词闭塞，封闭

1. 封严：obtainingcore 取得岩心 | obturate 封严 | obturatorring 密封环;活塞环

2. 闭塞：obtundent 迟钝的 | obturate 闭塞 | obturation 闭塞

3. 闭塞/封闭/密闭：obtundent /使迟钝的/使缓和的/止痛剂/ | obturate /闭塞/封闭/密闭/ | obturation /闭塞/密闭/

verb

1. block passage through

e.g. obstruct the path

Synonym: obstructimpedeoccludejamblockclose up