您要查找的是不是：
- runway threshold markings 跑道入口标志
- QFE Atmospheric Pressure at Aerodrome Elevations or at Runway Threshold 在机场海拨高度或跑道端头的大气压
- The airplane overran the runway. 飞机滑行超过跑道。
- The height of the extended glide path or nominal vertical path at the runway threshold." 我在中文航图上没有找到这个东西，不过看含义好像是指下滑道过跑道口的高度。
- The plane taxied/was taxiing along the runway. 飞机在跑道上滑行。
- He accused his teacher of unfair marking. 他指责教师打分不公平。
- The cabin has a flat stone for a threshold. 这间小屋用一条扁平的石头做门槛。
- The treaty will be the threshold of lasting peace. 这个条约将成为持久和平的开端。
- A plane this size can't fly off such a short runway. 这样大的飞机无法从这么短的跑道上起飞。
- A track providing a runway for wheeled equipment. 轨道为装有轮子的设备提供跑道的轨道
- He vainly tried to mark the defacing stain out. 他试图除去有损外观的污迹，但没有成功。
- The runway has been cleared for take-off. 跑道已经过清除，可以起飞。
- He was on the threshold of his career. 他的事业刚刚起步。
- I repeat: the runway is not clear for take-off. 我再说一遍: 跑道尚未畅通，不能起飞。
- She spent the evening marking examination papers. 她一晚上都在批试卷。
- He had never crossed the threshold of a bar before. 他过去从未进过酒吧的门。
- A sinuous path, line, or marking. 弯弯曲曲的道路、线条或记号
- Marking the exam papers was quite a slog. 评阅试卷是很辛苦的工作。
- Scientists are now on the threshold of an important discovery. 科学家们很快就会有一项重大发现。
- Her school work isn't quite up to the mark. 她的功课不大符合要求。
