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我想创建一个表格,如图所示。我已经使用以下代码 \ usepackage {tabulary}
\开始{文档} \开始{tabulary} {\线宽} {LCL}
Pollutant & Description and sources & Health and environment effects \\
\hline
SO$_2$ & SO$_2$ is formed by oxidation of sulphur (S), mainly through combustion of fuels containing S. The electricity generation sector is the most important source of SO$_2$. SO$_2$ also can contribute to the formation of secondary sulphate particles in the atmosphere. & SO$_2$ aggravates asthma and can reduce lung function and inflame the respiratory tract. It can cause headache, general discomfort and anxiety. SO$_2$ contributes to acid deposition, the impacts of which can be significant, causing damage to forests and ecosystems in rivers and lakes. \\
\hline
Nitrogen oxides (NO$_x$). & NO$_x$ is emitted during fuel combustion e.g. from industrial facilities and the road transport sector. NO$_x$ is a group of gases comprising nitrogen monoxide (NO) and nitrogen dioxide (NO$_2$). NO makes up the majority of NO$_x$ emissions. NO$_x$ contributes to the formation of ozone and particulate matter. & NO$_2$ is associated with adverse effects on health: it can affect the liver, lung, spleen and blood. It can also aggravate lung diseases leading to respiratory symptoms and increased susceptibility to respiratory infection. As with SO$_2$, NO$_x$ contributes to acid deposition but also to eutrophication of soil and water. \\
\hline
\端{tabulary} \端{文档}
他们看起来不太好用上面的命令。我该怎么做才能让它看起来更像是图片中的那个。