No one ever precisely pinned down the origin of an order this May to kill all dogs in the town of Heihe, on the Russian border in the far northwest.是什么意思_No one ever precisely pinned down the origin of an order this May to kill all dogs in the town of Heihe, on the Russian border in the far northwest.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句