She drove up a steep grade and then began the long descent into the desert.
她驾车爬上一个陡坡，然后开始长长的下坡进入沙漠。
The small company made the long descent in silence, stopping thrice to refresh themselves along the way.
小队伍安静地下行，过程中三次停顿休息。
“This is the kind of freedom we long for in Iran, ” sighed Ali Akbar, an Australian tourist of Iranian descent.
澳大利亚旅游团的一位伊朗后裔阿里阿巴克轻声叹息道“这是我们在伊朗所渴望的一种自由。”
Given that the world has gravity, that upward velocity won't last long; eventually, the sphere reaches the apex and begins its descent.
由于这个环境中具有地心引力，因此向上的速度不会坚持很久；最后这个球会上升到顶点并开始下降。
Thus they reached the verge of an incline down which the road stretched in a long straight descent of nearly a mile.
他们就这样走到了一个山坡的顶上，再往前就是从山坡上通向下面的一条笔直大道，差不多有一英里长。
So at every nonstationary point there exists at least one feasible descent direction, every iterate generated by the methods is feasible so long as the initial iterate is feasible.
这样在每一个非稳定点处至少存在一个可行的下降方向，在初始点是可行点的条件下，此算法产生的每一个迭代点都是可行点。
Adopt the kind period too long, interference can't on time dissolve, make regulate the quality descent.
采样周期不能太长，否则会使干扰无法及时消除，使调节品质下降。
Adopt the kind period too long, interference can't on time dissolve, make regulate the quality descent.
采样周期不能太长，否则会使干扰无法及时消除，使调节品质下降。
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