balls
A ball is a round or oval object that is used in games such as tennis, baseball, football, basketball and soccer.
a golf ball.
一个高尔夫球。
A ball is something or an amount of something that has a round shape.
Thomas screwed the letter up into a ball.
托马斯把信揉成一团。
The ball of your foot or the ball of your thumb is the rounded part where your toes join your foot or where your thumb joins your hand.
A ball is a large formal social event at which people dance.
My Mama and Daddy used to have a grand Christmas ball every year.
我妈妈和爸爸以前每年都要办一场盛大的圣诞节舞会。
have a ball
If you are having a ball, you are having a very enjoyable time.
Outside the boys were sitting on the ground and, judging by the gales of laughter, they were having a ball.
在外面,男孩子们正坐在地上,从他们发出的阵阵笑声来看,他们玩得很开心。
balls , balling , balled
When you ball something or when it balls, it becomes round.
He picked up the sheets of paper and balled them tightly in his fists.
他捡起那几张纸,在手里把它们紧紧地攥成团。