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- This paper develops the enumeration number of ladder track. 提出梯线方案的枚举数。
- Based on the design theory and application foreground of the ladder track structure, this paper analyses the effect of the structure on track itself and the environment. 摘要介绍了梯子式轨道结构的基本理论、设计理念、应用前景，分析了应用这种轨道结构对线路、环境等的影响。
- Ladder Track Structure-A New Line System of Urban Rail Transit 梯子式轨道结构系统
- Please go down the ladder and chuck up my hat. 请下梯子把我的帽子扔上来。
- Our pilotless rocket enters the track of the earth. 我们把一个无人驾驶的火箭送入了地球的轨道里。
- She was badly hurt when she fell from the ladder. 她从梯子上跌下来，伤得很厉害。
- Please hand the basket up to Father on the ladder. 请把篮子递给梯子上的父亲。
- This ladder is riddled with woodworm. 这个梯子已经让蛀虫蛀了很多洞。
- Be careful not to fall off the ladder. 当心别从梯子上掉下来。
- This rough track will soon be a metalled road. 这条坑坑洼洼的路不久就要铺上碎石了。
- He is too timid to get up to the top of the ladder. 他太胆小爬不上梯子的顶端。
- I'm trying to track down my old Aunt Maud. 我正试图寻找到我那年迈的婶婶莫德。
- Have you any tights that won't ladder? 有没有不易抽丝的裤袜?
- The cyclist went at full sail along the track. 自行车手沿着跑道全速前进。
- It's considered unlucky to walk under a ladder. 从梯子下面走过被认为是不吉利的。
- Bill has a feeling he is on a fast track. 比尔感觉到他正快速迈向成功。
- Hard work is often a ladder to success. 发奋工作常是通向成功的阶梯。
- The new race track is nearly six miles in extent. 这条新跑道将近六英里长。
- He climbed up the ladder, but soon got down. 他爬上了梯子，但不久就下来了。
- John bears the bell in all track events at school. 约翰在学校里的各个径赛项目中都赢得第一名。
