算一下,根据Nielson 2009年的一项研究,美国人平均每天在电视上消耗的时间大约为5个小时!
Let's do the math. According to a 2009 Nielson study, the average amount of time an American spends watching TV is around five hours per day!
所以我们算一下,绕这个轨道一圈,要多长时间。
So we also know how long it takes for the object to go around in orbit.
你可以算一下需要多少时间。
You could calculate the time.
你可以算一下需要多少时间。
应用推荐