- aging population老年人口;
- aging of population[医] 人口变老;
- agent provocateurn.密探，内奸;
- acid proof paper耐酸纸;
- acid proof paint[机] 耐酸油漆;
- acid proof floortile耐酸地板瓷砖;
- acid proof cement耐酸水泥;
- acid proof brick耐酸砖;
- proof total总计验证;
- proof sheetn.校样;红样;
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