佢哋都係立體嘅 同埋字嘅結構會隨著意思唔同 而有所變化 意思就係一啲細小嘅變化 都可以改變手語同言語成個意義
They are all three-dimensional, and the structure of the word will change with different meanings, and the meaning is that a small change can also change the entire meaning of sign language and speech