1 PHRASAL VERB 追溯到;回溯到 If something goes back to a particular time in the past, it was made or started at that time. 追溯到;回溯到
2 PHRASAL VERB 回到(过去);回顾 If someone goes back to a time in the past, they begin to discuss or consider events that happened at that time. 回到(过去);回顾 [Also VERB PREPOSITION n]
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