soundn.声音；嘈杂声；音乐风格；曲调；印象；感觉；海峡；鱼鳔；探针v.听起来；感觉起来；发出声音；发音；探测深度；探询adj.有效的；合理的；可靠的；全面的；健康的；完好的；酣睡的；严厉的adv.酣畅地sound hole音孔

1. Open the component source file and set breakpoints.
   打开组件源码文件设置断点。
2. Of course,the class might already exist in the same source code file that it's being called from.
   当然，这个类可能就在发出调用的那个相同的源码文件里。