noun 下载 🔗分享 竖框,窗棂。 A vertical bar between the panes of glass or casements of a window or the panels of a screen. Examples : "The sunlight streamed through the window, highlighting the dust on the mullions that divided the glass panes. " 阳光洒进窗户,照亮了分隔玻璃窗格的竖框上的灰尘。 architecture building part 与AI对话词汇游戏阅读练习