The siblings, who agreed not to compete against each other, have butted heads noisily ever since.

这两兄弟本来说好不互相竞争的，但自打那之后便成天吵吵闹闹地打斗起来。

youdao

Jackson butted heads with Parker toward the end of last season, but seemed more conciliatory when asked about him recently.

在上个赛季末杰克逊和帕克闹得很不愉快，但是当问他帕克的近况时，他却显得很温和。

youdao

Baidu also has butted heads with Alibaba Group, a Chinese online-commerce company that is much bigger than Baidu by revenue.

百度和阿里巴巴集团公司(Alibaba Group)也存在竞争关系。 后者是中国在线商务公司，按收入计算比百度大得多。

youdao

While the judiciary often butted heads with the Mubarak regime, its contrarian decisions were often ignored.

WSJ: Panel Upends Egypt Election

Klein says the tension that existed when he and Gates butted heads from opposites sides of a federal courtroom has since dissipated.

FORBES: Legal Adversary Turned Ally

Ms Park lost the nomination to Mr Lee in 2007 and since then she and her loyalists have butted heads with the government.

ECONOMIST: The race to succeed the president gets under way