1-pat yourself on the back 安慰自己一下

Pat yourself on the back if you've sealed your home for energy-efficiency.

2-draft 钻进某处的风

Keeping drafts out is a money-saving move.

3-hitch 暂时的困难，故障

4-mite 螨

5-mold 霉

The hitch? A tightly sealed home may also trap in pet danger, smoke, dust mites, mold and other nasties that can trigger respiratory issues.

6-portable 便携的，轻便的

Based on manufactures' estimates, about 1 in four US households own a portable indoor air purifier, including those that come as part of a fan.

7-buy 从众

As indoor air quality becomes a concern for consumers, manufacturers produce " remedies " to buy or, at minimum, buy into.

8-cure-all 万灵药

9-affiliated with 隶属于

10-allergen 过敏源

Air purifiers can be important part of allergen avoidance, but they are not a cure-all, says Manay Singla, an allergist and immunologist affiliated with Medstar Health locations in Maryland.

11-airborne 空气传播的

Because they filter airborne particles such as dander and pollen, air purifiers might be best for people with animal allergies who own a dog or a cat or who leave doors and windows open.

12-filtration 过滤

The principal role of air cleaning and filtration in the living environment for those with allergic respiratory disease might relate more toward the reduction of disease progression rather than a treatment.