polypeptide antibacterial agent的用法和樣例：
例句
- Conclusions Gatifioxacin, as the same of ceftazidime, is a potent antimicrobial agent against Gram-negative bacteria.
結論加替沙星對革蘭陰性致病菌的體外抗菌活性較強，和頭孢他啶相似，是一種高效的新型抗菌藥物。 - Aureomycin residues were found in pork.Residues of antibacterial drugs indicated that animal food was not optimistic.
豬肉中檢出金黴素的殘留，表明動物性食品抗菌藥物殘留的現狀不容樂觀。
