Also, if you have not properly washed the fruits and vegetables, some of the residual chemicals on the surface can irritate the bowels.

又，如果蔬果没有经过清洗，表面残留的化学物质会刺激到肠胃。

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Other chemicals may have a variety of disadvantages such as toxicity or inability to penetrate residual blood and other organic materials.

其它的化学物质都可能有各种各样的缺点，例如：会有毒性或是对清除残血或是有机物质没有效果等。

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