WallgrenˈwɒlɡrənCOCA²⁸⁰¹³⁶⁺⁵ 基本例句 n.沃尔格伦¹⁰⁰ “ We don't understand where the contamination is coming from and hopefully our investigation will tell, ” said Peter Wallgren at the Swedish National Veterinary Institute. 瑞典国家兽医局的官员 Peter Wallgren先生说：“我们仍不知道该病的传染源从何而来，也希望我们的调查能够告诉这一点”。 yuefengdb