标准缩微胶卷

microfilm strip;strip microfilm

• borrow
• borrower
• boss
• bossy
• botanic
• botanical
• botany
• both
• bother
• bottle
• bottled water
• bottom
• bottomless
• bought
• bounce
• bound
• boundary
• bounded
• boundless
• bounds
• bow
• bowl
• bowling
• box
• boxer