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1·I'll need to reacquaint myself with this program—it's a long time since I've used it.

我得再熟悉一下这个程序—我已经很长时间没用了。《牛津词典》

2·Besides, I can always come back to reacquaint myself with something that was missed in the first pass.

此外，我还总是重新熟悉那些我从一开始就漏掉的部分。