但是，在真实世界中墙的表面不是绝对平的，如何避免机器人靠向墙壁或离墙太远本身就是个难题。
In the real world with its imperfect surfaces, getting your robot not to veer into the wall on its left or veer too far away from that wall is quite a challenge in itself.
平赫特离锡尔伯里只有5英里，但詹姆斯.斯科特先生未能为他新的汽车修理部搞到一部电话机，所以他买了只鸽子。
Pinhurst is only five miles from Silbury, but Mr. Scott cannot get a telephone for his new garage, so he has just bought twelve pigeons.
两位球员都在周六1比1战平谢联的比赛中受伤被迫离场。
Both players were forced to leave the field injured during Saturday's 1-1 draw at Sheffield United.
还指出仅当柱面或平面光栅时，才能形成二阶子午无离焦平场和弧矢无象散圆场谱面。
It is also shown that only when the gratings are cylinder or plane ones, the second order sagittal anastigmatic circular field and meridional non defocus flat field spectral images can be formed.
分析了单向光电三角高程测量的误差来源，在此基础上推导了最佳测站位置离测点的平距公式。
Based on the error resource analysis in one-way photoelectric triangulated heigh survey, the horizontal distance equation is drawn for optimal station away from survey point.
费尔马伦在周三晚上在维拉公园被抬上担架离场，在阿森纳0：0打平维拉上半场，他的腿受伤。
Vermaelen left Villa Park on crutches on Wednesday night after hurting his leg during the first half of Arsenal's 0-0 draw against Aston Villa.
格拉汉姆作战森林狼时得到平职业生涯最高的24分，在第一节还剩2分56苗离场。
Graham, who matched his career high with 24 points in Tuesday's win at Minnesota, went scoreless in nine minutes before leaving with 2:56 in the first quarter.
格拉汉姆作战森林狼时得到平职业生涯最高的24分，在第一节还剩2分56苗离场。
Graham, who matched his career high with 24 points in Tuesday's win at Minnesota, went scoreless in nine minutes before leaving with 2:56 in the first quarter.
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