[Tracer与Span](tracer-and-span.md) [annotations与事件](annotations-and-event.md) [存储](store.md) [近期存储与限制存储](recentstore-and-limitstore.md) [反射](reflect.md) [SpanRecorder与Collector](recorder-and-collector.md) [OpenTracing部分支持](opentracing.md)