When this larger message is sent through the air or some other noisy environment, a few of the bits in the coded message may be garbled (some 1s are turned into 0s and vice versa).

• 当这个较长的讯息透过空气或是其他有杂讯的环境传送时，编码里的一些位元可能被弄乱（有些1变成0，或是倒过来）。