(1)(医)共济失调；协调不能；运行性共济失调

(2)失控；无秩序

• opening a credit
• opening statement
• opening the case
• opening the pleadings
• open law
• open letter of credit
• open listing
• open marriage
• open policy
• open possession
• open price
• open primary
• open sea
• open season
• open shop
• open skies
• open theft
• open trial
• open verdict
• open will
• operarii
• operarius
• operating expense
• operating lease
• operating loss