If an update already exists in the queue for the target feed, replace it with the new value, but keep the original timestamp.

如果目标Feed的队列中已经存在更新，则用新值替换它，但要保留原来的时间戳。

youdao

If an update already exists in the queue for the target feed, replace it with the new value, but keep the original timestamp.

如果目标Feed的队列中已经存在更新，则用新值替换它，但要保留原来的时间戳。

youdao