[ 复数 letterboxes 第三人称单数 letterboxes 现在分词 letterboxing 过去式 letterboxed 过去分词 letterboxed ]
N-COUNT A letterbox is a rectangular hole in a door or a small box at the entrance to a building into which letters and small packages are delivered. 信箱 [英国英语]
The next day there was a letter in her letterbox.
第二天她的信箱里有封信。
ADJ If something is displayed on a television or computer screen in letterbox format, it is displayed across the middle of the screen with dark bands at the top and bottom of the screen. (电视或电脑上的影像) 宽屏带黑边的
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