wǒ / hòu / zhī / hòu / jué / de / fā / xiàn / dà / jiā / zǎo / jiù / zhī / dào / zhè / ge / xiāo / xi / le

我后知后觉地发现，大家早就知道这个消息了。

I belatedly realized that everyone had known the news for a long time.