unaccompanied
【原文】There are also fees at many U.S. airlines for early boarding, unaccompanied minors, processing a ticket purchased with award miles, getting a ticket issued by an airline reservations clerk, using a mileage-based upgrade, and overweight bags and oversize luggage.
【単語の意味(日本語)】
連れのいない
【その他の単語】
minor 未成年者