explosive：爆炸(性)的，爆发(性)的

词根词缀：ex-出 + -plos-爆裂 + -ive形容词词尾

• obsession
• obsessive
• obsidian
• obsolescence
• obsolescent
• obsolete
• obstacle
• obstetrician
• obstetrics
• obstinate
• obstreperous
• obstruct
• obstruction
• obtain
• obtrude
• obtrusive
• obtund
• obtuse
• obtuse angle
• obverse
• obviate
• obvious
• obviously
• oc-
• ocarina