The most common one and the one we're going to use, is what's often called big Oh notation.
也就是我们即将用的方法,就是通常被叫做大O的方法，它叫大O并不是因为。
2
Behold now, this city is near to flee unto, and it is a little one: Oh, let me escape thither, (is it not a little one?) and my soul shall live.
19：20看哪，这座城又小又近，容易逃到，这不是一个小的吗。求你容我逃到那里，我的性命就得存活。
3
"Four Weddings and a Funeral" was one of the films that I did ages and ages ago which was perhaps one of those things that people come up to me and say "Oh, that was great!"