block短语辨析.
问题描述:
block短语辨析.
block out与block off的区别.附例句.详细些,谢!
答
block out封闭;概略画出Unplug the phone and use a white-noise machine,or a fan or an air conditioner,to block out background noise.把电话线拔掉,使用一个能产生白噪声的机器,或是打开电风扇、空调,以阻断背...