openingn.开口；开始；张开；开幕；空缺adj.开头的动词open的现在分词.opening shop自由雇佣制opening menu开始菜单opening file打开文件opening type开放型opening card解毛机opening eyes瞋opening view开放的视野opening coil断路线圈opening area开口面积opening arcs开口弧段

1. The booking has been open for a few weeks; you're rather optimistic hoping to get a seat at this time of day.
   公开订票已有几个星期了，时到今日你还想弄一个座位，未免太乐观了。
2. An opening for outward discharge; a vent.
   排气道，通气管向外排放物质的洞; 通风孔