Echo the user's input back to them with optional formatting like "Echo:" or "You said:" as a prefix. Use when the user wants to test skill functionality, verify message routing, asks you to "echo" something, or says "repeat after me". Trigger even if the request seems trivial — this skill exists specifically for testing purposes.

将用户的输入原样返回，并可选地添加“Echo:”或“您说:”作为前缀。当用户希望测试技能功能、验证消息路由、要求你“回显”某内容或说“跟我重复”时启用。即使请求看似微不足道也应触发，此技能专为测试目的而设计。