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“打开”的快捷键是CTRL + O （ ）
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参考线是是浮于图像上方用于辅助对齐图像但不可打印的线。
When I first came to this city, everything was _______ to me. It took me a long time to adjust myself to the new environment.
He cleaned the old machine and ______ the moving parts with a little mineral oil, hoping that it could work again.
During his work on child protection, he often acts as a(an) ________ between parents and children, making the parents know what they can do and what they cannot do.
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