这类地毯不容易弄脏，因为是用特殊化学品浸渍过的。
These carpets don't stain, they're impregnated with a special chemical.
适当穿衣，使用驱蚊剂、浸渍过药物的蚊账、杀虫剂、纱窗和空调等
Wear appropriate clothing, and use repellents, impregnated bed nets, insecticides, screens and air-conditioning
在大不列颠和美州就进行过用植物焦油和提取物来浸渍木材的试验。
Experiments were carried out in Great Britain and American on the impregnation of wood with vegetable tars and extracts.
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