The first to pass is Tootles, not the least brave but the most unfortunate of all that gallant band.
第一个走过去的是嘟嘟士，他不是这队勇士中最胆小的，但却是最不幸的。
2
You all know how when you take a crystal prism and pass a beam of sunlight through it, you get a spectrum, which looks like a continuous band of rainbow colors.
你们都知道，拿起一个水晶棱镜，让一束阳光通过它，就会得到一个光谱，看起来就像一条连续的彩虹色带。
3
This paper design a 4-step bandpass digital filter.