1. The riddle of a dog‘s oestrum is a very special scenery,especially those who has a female dog in the family,it is really a wonder.
   狗的反群之迷的确是狗的最独特的风景线，特别是家里有小母狗的朋友，那可真是一大奇观了。
2. In this case, how to participate in the international competition in respect of an oestrum ” “ to rely on, is something that depends on the human factor “.
   在这种情况下，如何参与国际竞争就不仅是一件依靠“自然条件”的事，更是一件取决于“人为因素”的事。

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