您要查找的是不是：
- ascentional ventilation 下行通风
- They made a successful ascent of the mountain. 他们成功地登上了山。
- The last part of the ascent is very steep. 最后一段上坡路很陡。
- The first part of the ascent is not steep. 开始一段上坡路并不陡峭。
- This is a room with good ventilation. 这是个通风良好的房间。
- Hot and perspiring, he toiled up the dusty ascent. 他艰难地在尘土飞扬的坡道上爬着，热得汗水淋淋。
- The act or process of ascending; ascent. 攀登攀登的行为或过程; 攀登
- Melodic ascent and descent of pitch. 旋律的变移声调旋律的上升或下降
- The old man had difficulty climbing the rapid ascent. 这位老人攀登这条陡峭的上坡路有困难。
- Greatness is an eminence, the ascent to which is steep and lofty. 伟大是一种声誉，攀登上去是陡峭而险峻的。
- The ventilation is poor, the lieutenant admits. 中尉承认，通风设备很糟糕。
- Getting ready for a slow ascent is more likely. 作好准备慢慢地升迁的可能性更大。
- Workers should be allowed full ventilation of all their difficulties. 工人们应被允许公开讨论他们所有的困难。
- We made a successful ascent of the mountain. 我们顺利登上山顶。
- Who was the first man to make an ascent in a balloon? 第一个乘气球升空的人是谁?
- They altered the house to improve its ventilation. 他们把房子改装一下使它更通气。
- Regeneration production of ventilation fan. 换气扇的换代产品。
- The road has an ascent of five degrees. 这条路的坡度为五度。
- Open the window for some ventilation. 打开窗子好通风。
- The steepness of the slope forbade ascent. 坡度很陡，没法攀登。
