two-year-old fillies 两岁母马
race fillies 赛马母马
breeding fillies 育种母马
young fillies 年轻母马
filly race 母马赛
1. The stable has three promising fillies this season.
马厩里这个赛季有三匹很有潜力的年轻母马。
2. Fillies are usually smaller than colts but can be just as fast.
母马通常比公马小，但速度可能同样快。
3. The trainer is focusing on developing the fillies for next year's races.
教练正在专注于培养这些母马，为明年的比赛做准备。
A: How many fillies did the farm sell last month?
A：农场上个月卖出了多少匹年轻母马？
B: They sold five fillies to different owners.
B：他们向不同的主人卖出了五匹年轻母马。
1) 未满两岁的母马
2) 赛马中的年轻母马组别
3) 马匹育种中的年轻母马
1. 年轻母马（未满两岁）
e.g.The breeder selected the best fillies for the next generation.
育种者选择了最好的年轻母马用于下一代繁殖。
noun
1. A young female horse, especially one under two years old.
Synonym: young mare, colt (male equivalent)