There's often a legal tussle over who gets custody of the children.争夺孩子抚养权的法律纠纷经常发生。We are engaged in a legal tussle with a large pharmaceutical company.我们正同一家大制药公司闹法律纠纷。They found themselves in a legal tussle with a big corporation.他们发现自己与一家大公司产生了法律纠纷。