swiftletsCOCA¹⁷⁵⁶¹⁷BNC¹⁰⁴⁵⁸⁴⁺⁶ 基本例句 n.东亚雨燕原型swiftlet的复数 As for the investigation of fraudulent trade practices, precious commodities such as shark's fin and swiftlets nests are regularly submitted for certification of their authenticity. 在协助调查不良经营手法方面，化验所经常对一些贵重商品，例如鱼翅、燕窝等进行真伪鉴定。 hotdic