ANRPCn.天然橡胶生产国协会anart.（用在元音音素前）一an encounter with the enemy与敌军的遭遇战an air-traffic controller航空调度员.An ingrain rug or carpet.生产前染过色的地毯或毯子an unparalleled achievement空前的伟业an English proficiency test英语能力测验an orange of medium size.中等大小的桔子。an almost insensible change一个几乎不能被察觉的变化an ascending minor scale.向上的小天平angiomatous type meningioma血管瘤型脑膜瘤an everlasting contribution不可磨灭的贡献