■ readership

是个集合名词（“读者群”），只能单数，语法功用类似 population。

• a readership estimated at 16,000,000估计达一千六百万人的读者群。

• at..., we
• at 与 in
• audience
• autograph
• available
• avenge
• avenge 与 revenge
• average
• average, median, mean
• avoid
• avoid
• avoid 与 prevent
• await
• aware
• aware
• awareness
• aware 与 conscious
• away
• away from
• awesome
• awesome 与 awful
• awful
• back
• bake
• balk