HarmonyOS Text 组件，设置每行展示几个字符，进行断行

@Entry  
@Component  
struct TextOverflowPage {  
  @State type: string = 'WordBreakType:Normal且clip为true'  
  @State text: string = 'This is set wordBreak to WordBreak text content This is set wordBreak to WordBreak text content.'  
  @State str: string = '测试测试测试测试巴黎巴黎'  
  build() {  
      Text(this.str.substring(0, 7))  
  }  
}