content of nicotine的用法和樣例：
例句
- The content of nornicotine is higher after flue-curing than before flue-curing.
濕度對煙鹼含量影響無明顯的規律性。 - The color-reaction of nicotine with methyl orange was studied,and the satisfying result was obtained by applying it to determinate nicotine in smoke directly.
研究了甲基橙與煙鹼的顯色反應，並將其應用於直接測定煙氣中的煙鹼含量，獲得較為滿意效果。
