十年前，宠物更多是“养着玩”的存在，消费集中在主粮、零食和基础用品，核心诉求是性价比。今天的城市家庭里，宠物已经开始参与日常作息、占据情感中心，甚至演变为家庭成员的角色。
fn sum(numbers: [int]) - int {
，详情可参考新收录的资料
x = [True, False, True]
Wren is a class-based, dynamically-typed embeddable language with a clean syntax. Like Mog, it is designed for embedding in host applications. The key differences are that Mog is statically typed, compiles ahead of time, has no classes or inheritance, and provides a formal capability model for security. Wren’s object-oriented design makes it natural for game scripting; Mog’s functional style with explicit capabilities makes it natural for agent scripting and ML workflows.