covert
习惯用语in the covert of1.■在...的掩护下underthe covert of1.■在...的掩护下shoot a covert1.■在猎物藏身的地方射击猎物特殊用法ear coverts1.■耳羽greater coverts1.■大覆羽greater secondary coverts1.■次级大覆羽lesser secondary coverts1.■次级小覆羽lower wing coverts1.■下覆羽medium coverts1.■中覆羽medium secondary coverts1.■次级中覆羽primary coverts1.■初级覆羽upper wing coverts1.■上覆羽