oestrum

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。