a.  易于…的

a.  适当的，恰当的 ≈ appropriate

a.  聪慧的

• aptly   ad. 适宜地；适当地

• be apt to do sth  倾向于做某事，易于做某事 ≈ tend to

• aptly named/described/called 

  被恰当地命名/描述/称呼等

• As he and other researchers examined the question of why teens were more apt to take risks in the company of other teenagers, they came to suspect that a crowd's influence need not always be negative.

  在其他青少年的陪伴下，青少年更容易冒险

• Some of the staff are apt to arrive late on Mondays. 有些职员星期一往往迟到。

• ‘Love at first sight’ is a very apt description of how he felt when he saw her. 用“一见钟情”来形容他见到她时的感觉再恰当不过。

• The punishment should be apt for the crime. 罚应当其罪。

• The aptly named Skyline Restaurant provides spectacular views of the city below. 天际餐厅名副其实，可以俯瞰城市美景。