adj.无外援的,独立的;
例句:
Most cells are too small to be detected by the unaided human eyes.
绝大多数细胞都很小,肉眼看不到.
He did it unaided.
他独自做的.
Four months to the day, Ralph finally stood unaided.
到今天就四个月了, 拉尔夫终于独立地站立起来.