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队列满（Queue is full）：激光雷达消息产生速度超过 RViz 消息队列处理速度，导致队列溢出丢消息。 时间戳过期（Timestamp earlier）：激光雷达消息时间戳早于 TF 变换缓存中的数据，无法找到对应坐标变换，所以丢弃。 use_sim_time看了下都是True
主要是这个问题时间戳过期（Timestamp earlier）
