narrow-spectrum antibiotic的用法和樣例：
例句
- Spectinomycin is a broad spectrum antibiotic, which has an effect of being against gram negative and gram positive bacterium.
大觀黴素是一種廣譜抗生素，對革蘭氏陰性和革蘭氏陽性菌均有抗菌作用。 - In addition to surgical decompression of abscesses, broad-spectrum empiric antibiotic therapy is necessary.
作為外科膿腫減壓術的補充，廣譜抗生素的經驗性治療是非常必要的。
