Uploading this one-megabyte software update takes around an hour, so its speed is comparable to that of a 1990s modem connection.
传送这个1 Mb的软件用时要1小时左右，“堪比”20世纪90年代调制解调器的速度。
2
If you take a pebble with a radius of about one centimeter and you throw it off a high building, it will reach a speed which will not exceed 75 miles per hour because of the air drag.
如果拿一个半径是，1厘米的小卵石，从高楼上扔下去，它的速度因为空气阻力，不过超过每小时75英里。
3
Only after a half an hour of running on the machine at a precisely defined speed, dripping in sweat, can one envisage the artwork.