点击下方单词,选择对的这个单词
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
多通过句子记忆单词,而不是单独死记硬背。