一部分的植物花粉具有致敏性，对人体产生过敏反应。
Human allergic responses were caused by some plants 'pollen.
因为你不知道身体对那些食物产生过敏反应，所以你得缓慢进食。
Proceed slowly as you may not know if you are allergic to that food or not.
为确定病人不会对碘产生过敏反应，我们会询问他们是否能吃贝类食物。
To make sure a patient is not allergic to iodine, we ask whether they can eat shellfish.
接触性皮肤炎是因皮肤接触了刺激性物质或让人产生过敏反应的物质。
Causes and patterns vary. Contact dermatitis appears at the site of contact with an irritating substance or allergen.
这个环节如果有什么差错，婴儿会对食物产生过敏反应，从而导致应激性的炎症甚至哮喘。
If anything goes wrong at this stage, babies can develop food allergies, inflammatory bowel disease, and even asthma.
当年轻的女性穿耳洞的时候，她们第一次接触到镍金属，因此他们很可能对产生过敏反应的镍金属形成过敏。
Young girls are often first exposed to nickel when they get their ears pierced, and therefore are more likely to develop a sensitivity to the metal that can cause allergic reactions later on.
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。
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。
Sometimes it overreacts to what should be a perfectly innocuous food or other substance, causing an allergic reaction.
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