例句與造句

1. Digital speech has preponderance over analog speech in reliability , robustness and security during communication . however , digital speech needs more bandwidth than the analog signal . especially with the requirement for communication frequency increasing , it ' s necessary to code speech signal at low rates
   但是，數字化后的信號所占的頻帶大幅增加，特別是在帶寬需求日益增長的今天，這個問題尤為突出，因此語音的低速率編碼(即壓縮編碼)成為迫切的要求。
2. It's difficult to find code speech in a sentence. 用code speech造句挺難的