painstaking：需专注的，需细心的

pain,疼痛，-s,复数后缀，taking,承担。比喻用法。

• opprobrious
• opprobrium
• Ops
• opt
• optant
• optic
• taurine
• taut
• tauten
• tautology
• tavern
• tawdry
• tawny
• tax
• taxable
• taxi
• taxi
• taxidermist
• taxidermy
• taximeter
• taxing
• taxis
• taxiway
• taxonomist
• taxonomy