noun 下载 🔗分享 性周期,发情期 A time during which male elephants exhibit increased levels of sexual activity and aggressiveness and often secrete leaking temporin from the sides of their heads. Examples : "During the musth, the older male elephant in the sanctuary became very restless and aggressive. " 在发情期内,保护区里那头年长的雄象变得非常躁动和具有攻击性。 animal physiology biology 与AI对话词汇游戏阅读练习