| abashed | adj羞慚的,尷尬的 =bewildered=coy |
| abstain | v戒,避免 =refrain=desist |
| accountable | adj.應負責任的 =answerable=responsible |
| accretion | n.增加物,增量,沖積層 =development=enlargement |
| acrid | adj.(氣味或味道)難聞的,苦的,辛辣的 =disgusting=nasty |
| adorn | v.打扮,裝飾 =decorate=beautify |
| advent | n.到來,出現 =arrival=onset |
| advisable | adj.明智的,恰當的 sensible and good for achieving |
| aeronautics | n.航空學,飛行術 |
| afflict | v.折磨 =plague=trouble |