open one's mind 打开思想,开放想象力 如“Open your mind and guess what it means.”(展开想象,) across one's mind 一般不单独使用,和“come”搭配使用的情况较多,即“come across one's mind”,表示“(某人)想起……,……浮现于(某人)脑海” 如“The thought came across my mind that she must be a professor.”(我突然想起来,她一定是个教授.) 希望能够帮到你!