aloft         ad. 在高处,在上   
来源：考试大
at or to a great height  

aloft<>affinity   
来源：考试大
founder <> stay aloft   

grounded <> aloft

aloof         a. 疏远的,冷淡的  
来源：考试大
removed or distant either physically or emotionally  

politic : offend :: aloof : associate

gregarious <> aloof

alphabetical  a.字母(表)的，ABC的  

arranged in the order of the letters of the alphabet
来源：考试大
dictionary : alphabetical :: annals : chronological

altruism      n. 利他主义，不自私  

unselfish regard for or devotion to the welfare of others      

altruism <>egocentric
来源：考试大
amalgamate    v. 合并，混合

to merge into a single body     

amalgamate <> separate/isolate
来源：考试大
amass         v.积聚

to collect for oneself : ACCUMULATE      
来源：考试大
ambiguous     a.模棱两可的；分歧的

doubtful or uncertain especially from obscurity or indistinctness  

ambiguous : clarity :: mendacious : truth    

ambiguous : understand :: blatant : ignore   

equivocation:ambiguous::platitude:banal

watershed  <> ambiguity
来源：考试大
ambivalent    a. 矛盾的,好恶相克的来源：考试大

a : continual fluctuation (as between one thing and its opposite)  

b : uncertainty as to which approach to follow

ambivalent <> commitment

amble         vi. 缓行,溜蹄 来源：考试大

a leisurely walk  

walk : amble :: talk : chat     

ambrosial     a. 特别美味的

something extremely pleasing to taste or smell   

mellifluous : music :: ambrosial : food