Sherlock Holmes and his friend Watson (Шерлок Холмс и его друг Ватсон) were on a camping and hiking trip (были в палаточном походе; to hike - путешествовать, ходить пешком, бродяжничать).
They had gone to bed (они легли спать) and were lying there (и лежали "там") looking up at the sky (смотря /вверх/ на небо).
Holmes said, "Watson, look up. What do you see? (Ватсон, посмотрите наверх. Что вы видите)"
"Well, I see thousands of stars (я вижу тысячи звезд)."
"And what does that mean to you? (и что это значит, по-вашему, о чем вам это говорит)"
"Well, I guess it means we will have another nice day tomorrow (мне кажется, это значит, что у нас завтра будет очередной хороший денек). What does it mean to you, Holmes?"
"To me, it means someone has stolen our tent (что кто-то стащил нашу палатку /to steel-stole-stolen - красть/)."

Sherlock Holmes and his friend Watson were on a camping and hiking trip.
They had gone to bed and were lying there looking up at the sky. Holmes said, "Watson, look up. What do you see?"
"Well, I see thousands of stars."
"And what does that mean to you?"
"Well, I guess it means we will have another nice day tomorrow. What does it mean to you, Holmes?"
"To me, it means someone has stolen our tent."

And what does that mean to you?