Workers at the International Bird Rescue Research Center (IBRRC) in Fairfield, California, took the x-ray May 21 while treating a mallard duck that had been found with a broken wing.是什么意思_Workers at the International Bird Rescue Research Center (IBRRC) in Fairfield, California, took the x-ray May 21 while treating a mallard duck that had been found with a broken wing.在线翻译_英语_读音_用法_例句