Many substances in the air in our houses can cause allergies. This includes pet dander, dust mites, and pollen that has blown in from the outside.  Vacuum frequently. Using a vacuum with a high-efficiency particulate air filter (HEPA) will reduce the allergens that are in the air. Reduce the number of carpets you have in your house. Carpets, in contrast to hard floors, hold allergens and pet dander, making it more difficult to keep the house allergen-free. Wash your bedding regularly. You spend about a third of your day in bed. If you have allergens on your sheets and pillow, you are spending a third of your time breathing in those allergens. Use a plastic cover on your mattress to prevent allergens from settling. Wash your hair before you go to bed to rinse out any pollen that might be stuck in it. If you are allergic to particular pollens, stay at home as much as you can at the time of the year when the levels of those types of pollen are high. Keep your windows closed to prevent pollen from blowing into your house. This will reduce the amount of spores in the air.  Keep your home dry using fans and dehumidifiers in rooms with high humidity, like the bathroom. Fix any leaks in your house. This includes small things like drippy facets and larger issues like leaky roofs that might allow water to drip down the walls. If you have mold, kill it with a solution of bleach and water. If you are allergic to foods that are common ingredients like eggs or wheat, you may need to thoroughly read the ingredients lists on packaged foods.  If you have a lot of food allergies, print them on a business card so that you can give them to your server in restaurants. The server can then check with the chef to make sure you won’t be getting any of those foods. If you need to, bring your own food with you. Then you will always know what you are eating. If you are severely allergic to stings, stay far away while this is happening. You may need to do this again every few years.

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Write a summary of the previous text in Chinese:
防止过敏原在家中积累。 阻止霉菌生长。 不要吃会引起过敏的食物。 找专业人士清理掉屋子附近甚至房间内外的蜜蜂或黄蜂巢。