aboriginal [ 7AbE5ridVEnEl ] adj.土著的, 原來的n.土著居民
(記)ori(=起源，升起)參考：origin起源oriental東方的
abortive [E5bC:tiv] adj. 早產(chǎn)的, 流產(chǎn)的, 失敗的(failing to accomplish an intended objective; fruitless)
(例)We had to abandon our abortive attempts. 我們不得不放棄我們失敗的嘗試。
(記)Abort，Retry，F(xiàn)ail?異常中斷，重試，失敗?計(jì)算機(jī)上經(jīng)常出現(xiàn)的提示
abound [E5baund] vi. 多, 大量存在, 富于, 充滿(to be great in number or amount)
aboveboard adj. 無欺詐的(free from all traces of deceit)adv. 光明磊落地(forthright，straight)
(反)surreptitious ◆ barefaced/ aboveboard 暗中的 ◆ 公然的/ 無欺詐的
chicanery ◆ aboveboard action 欺詐 ◆ 光明磊落
abrade [E5breiVEn] v. 磨損(to rub or wear away especially by friction：erode)
(類)abraded·friction=vaporized·heat 磨損由于摩擦=蒸發(fā)由于加熱
(反)abrade ◆ augment 磨損 ◆ 增加
(同)corrade, erode, gall, graze, rub, ruffle, wear