The staff wore hats all week and tipped them toward the volu

两道天文问题求解!急求高手!
5. Understanding the seasons. Uranus is tipped on its side (its rotation axis is parallel to the ecliptic). Describe how a northern hemisphere Uranian would experience the seasons over a year. (Hint: draw Uranus in its orbit around the sun at both the equinox and solstice positions.)
季节问题.天王星是倾斜的（其转动轴平行于黄道）.描述一下,天王星的北半球在一年中经历了怎样的季节?（提示：画出天王星在绕日轨道上的两分和两至的位置）
7. a. Suppose that instead of dropping a lead ball and a wooden ball from the Leaning Tower of Pisa (where, according to the legend -- and to Newton's Laws, they landed at the same time), Galileo dropped them in deep space, far from any star. Describe what would happen and why. (Assume the lead ball is more massive than the wooden ball, and much less massive than Galileo.)
a假设当初伽利略并没在比萨斜塔上扔下一个铅球跟一个木球,而是在宇宙深处,远离一切恒星的地方进行实验.请描述会发生什么并解释.（假设铅球比木球更重,而比伽利略要轻很多）
b通过绕着地球公转可以逃脱地球引力吗?为什么在宇宙飞船里的宇航员是处于失重状态?请解释
急求高手,在线等

rubber tipped pestle的中文意思是什么?
还有ceramic mortar,tamp rod, cylinder stripping tool, vacuum pump的中文意思.

what tipped the scale
原文 是
采购主管说 we have already decide on another supplier .
推销员说 thank you letting me know that.what tipped the scale

be tipped for success
what is the meaning of this phrase?
wangmeng(王蒙，短道速滑选手) is tipped for success at the vancouver winter olympics.
预先知道成功？

英语翻译
The staff wore hats all week and tipped them toward the volunteers as we saw them.The volunteers here seemed to appreciate the silent effort to recognize them.这段英语有那些语法点和短语

英语翻译
the arrow is tipped with an iron arrowhead to perforate its target.请问这里的tipped如何翻译

The book is tipped to be a big seller,like the rest in the series

英语翻译
The 27-year-old gymnast had been tipped for glory at the 2004 Olympic Games

but then I'm shoved forward again,tipped off balance,and I' m underwater once more

这个句子里tipped是啥意思啊?
Robert Lewandowski has been widely tipped to join Bayern Munich next summer

5.Understanding the seasons.Uranus is tipped on its side (its rotation axis is parallel to the ecliptic).Describe how a northern hemisphere Uranian would experience the seasons over a year.(Hint:draw Uranus in its orbit around the sun at both the equinox and solstice positions.)
天王星是倾斜的（其转动轴平行于黄道）.天王星的北半球在一年中经历了怎样的季节?（提示：画出天王星在绕日轨道上的两分和两至的位置）
7.a.Suppose that instead of dropping a lead ball and a wooden ball from the Leaning Tower of Pisa (where,according to the legend -- and to Newton's Laws,they landed at the same time),Galileo dropped them in deep space,far from any star.Describe what would happen and why.(Assume the lead ball is more massive than the wooden ball,and much less massive than Galileo.)
a假设当初伽利略并没在比萨斜塔上扔下一个铅球跟一个木球,而是在宇宙深处,远离一切恒星的地方进行实验.请描述会发生什么并解释.（假设铅球比木球更重,而比伽利略要轻很多）
b通过绕着地球公转可以逃脱地球引力吗?为什么在宇宙飞船里的宇航员是处于失重状态?

英语翻译
the staff wore hats all week and tipped them toward the volunteer as we saw them .the volunteers here seemed to appreciate the silent effort to recognize them.