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ned that if I want to succeed, I must study hard. 回想起过去的三年,我领悟到要想成功,就必须努力学习。 think back on 意为“回想起,追忆”, 相当于 think back to。 3. Nothing is impossible if you set your mind to it. 世上无难事,只怕有心人。 possible 可能