He is tough (and will not back down from a fight) but plays ball with the neighborhood kids in the field which ajoins Birdy's house.
他很强硬，并且不会在打斗中退缩，却会跟邻居小孩在鸟人家旁边的空地上打球。
2
It plays an irreplaceable role in thefield of data exchanging.
在数据交换领域中它起到了不可替代的作用。
3
During its five-year mission, it will examine the sun's magnetic field and also provide a better understanding of the role the sun plays in Earth's atmospheric chemistry and climate.