Initialism for authentication, authorization, and accounting in network security.

• Framework for controlling access and tracking user activity.

网络安全中的缩写：认证、授权与计费（AAA）。

• 用于访问控制与用户活动审计的框架。

The highest long-term credit rating for issuers or debt.

• Indicates extremely strong capacity to meet financial commitments.

最高信用评级，授予信用极强的发行人或债券。

• 表示极高的履约能力与财务稳定性。

A big-budget, high-profile video game expected to sell well.

• Often produced by major studios with large marketing.

大制作、高投入的AAA级电子游戏，预期销量可观。

• 通常由大型工作室制作并进行大规模营销。

The highest level of minor league baseball, also other sports.

• Often called Triple-A, just below the major leagues.

小联盟棒球的最高级别，亦指其他运动的最高小联盟级别。

• 常称为Triple-A，仅次于大联盟。

Initialism for abdominal aortic aneurysm in medicine.

医学缩写：腹主动脉瘤。

Initialism for anti-aircraft artillery in military contexts.

军事缩写：高射炮。

A very narrow shoe width size, especially in women's footwear.

鞋码宽度标记中的极窄尺码，尤见于女鞋。

Initialism for awaiting aircraft availability in aviation logistics.

航空领域缩写：等待飞机可用状态。