求英语大神翻译下这个英语的物理题 实在是不会了8. MichelsonMorley for a real windTaken from Resnick and Halliday, Basic Concepts in Relativity (MacMillan, New York, 1992).A pilot plans to fly due east from A to B and back again. I

求英语大神翻译下这个英语的物理题 实在是不会了8. MichelsonMorley for a real windTaken from Resnick and Halliday, Basic Concepts in Relativity (MacMillan, New York, 1992).A pilot plans to fly due east from A to B and back again. I
求英语大神翻译下这个英语的物理题 实在是不会了
8. MichelsonMorley for a real wind
Taken from Resnick and Halliday, Basic Concepts in Relativity (MacMillan, New York, 1992).
A pilot plans to fly due east from A to B and back again. If u is her airspeed and if ` is the distance between A and B, it is clear that her roundtrip time t0 — if there is no wind — will be 2`/u.
(a)
Suppose, however, that a steady wind of speed v blows from the west. What will the round trip travel time now be, expressed in terms of t0, u, and v?
(b)
If the wind is from the south, find the expected roundtrip travel time, again as a function of t0, u, and v.
(c)
Note that these two travel times are not equal. Should they be? Did you make a mistake?
(d)
In the MichelsonMorley experiment, however, the experiment seems to show that (for arms of equal length) the travel times for light are equal; otherwise these experimenters would have found a fringe shift when they rotated their interferometer. What is the essential difference between these two situations?

求英语大神翻译下这个英语的物理题 实在是不会了8. MichelsonMorley for a real windTaken from Resnick and Halliday, Basic Concepts in Relativity (MacMillan, New York, 1992).A pilot plans to fly due east from A to B and back again. I
这道题的翻译:
一个飞行员打算从A地以东方向飞往B地再往返.如果她在空中的速度是【u】,A地B地之间的距离是【 `】的话,很显然,她来回所需要的时间【t0】(如果没有风的话) 会是【2`/u】.
(a) 假如一阵速度为【v】的风从西方刮来,飞行员来回所需要的时间现在变为多少?(请用【t0,u,和v】表示)
(b) 如果风是从南边来的,请找出新的来回所需要的时间.(同样用【t0,u,和v】表示)
(c) 注意,(a)和(b)题所得到的时间不相同.它们应该等同吗?你是不是犯了一个错误?
(d) 在迈克耳孙－莫雷实验里 (Michelson-Morley experiment),实验结果似乎说明光速不变；要不然的话实验者们转动干涉仪的时候就会发现边缘的移位了.那么,这一道题中得到的两个不同的时间和迈克耳孙－莫雷实验得出的结果有什么本质上的区别?
注：(a)和(b)题,你是不是漏掉了`这个表达距离的符号.