These bacteria actually combine the hydrogen sulfide with the carbon dioxide and this chemical reaction is what produces organic material which is the food for larger organisms.
这些细菌实际上就是硫化氢和二氧化碳的结合体，而这种化学反应产生的有机物质是更大的有机体的食物。
2
Sometimes it overreacts to what should be a perfectly innocuous food or other substance, causing an allergic reaction.
有时，它会对某种完全无害的食物或其它物质产生过度反应，导致过敏反应。
3
The next test used actual food to test the salivary reaction.