Him express affection calls oestrus.

抒发自己的情感就叫发情。

Male peacock: Bah, you are mean, old love sees my oestrus!

雄孔雀：呸，你们下流，老爱看我发情！

Donation is like oestrus, they desire it the moment they remember it.

捐款就像发情，想起来了你就想要。

Effects of different nutrition levels on oestrus time of over-early weaning ewes;

实验模拟了不同风浪强度、不同营养水平下铜绿微囊藻的生长速率。

On day 27 of lactation intermittent suckling started to induce lactational oestrus.

在哺乳第27天，采用间歇性哺乳来诱导哺乳期内发情。