unaccustomed = un(表否定) + ac(使) + custom(习惯) + ed(形容词) = 不习惯的
unable = un(表否定) + able(能…的) = 不可避免的
attach = at(加强) + tach(钉) = 接触上→附上
attain = at(加强) + tain(拿住) = 拿住了→获得
attendance = at(一再) + tend(伸展) + ance(表名词) = 一再伸展到该去的地方→出席
attend = at(一再) + tend(伸展) = 一再伸展到该去的地方→出席
accomplied = ac(加强) + com(全部) + pli(满) + ed(形容词) = 全部弄满的→技艺高超的，熟练的
accredited = ac(一再) + cred(相信) + it(...的) + ed(形容词) = 一再相信的→可信任的
Whenever an apparently mundane problem was solved, such as building a system that could land an aircraft unattended,the problem was deemed not to have been Al in the first place.
If you see any unattended bag or package, please don't touch it.
The mob broke into the family house while it was unattended and started four fires.
The unattended vehicles were in the parking lot of a Marystown motel.
Never leave pets unattended in your car.
Never leave young children unattended near a swimming pool.
His car will be damaged if you leave it unattended here.
Please look after those unattended children on a flight.
We became unattended children.
an unattended voice message