相关单词近義詞 uncomplicated 不複襍的, simple 簡單的, easy 容易的, smooth 光滑的, without a hitch 順利無阻地(輕易地)..., straightforward 易懂的, trouble-free 可靠的, 無故障的..., elementary 基本的臨近詞UN, unripp 返回 unproblematic