My brother and I just couldn't help laughing from the beginning to the end.

我和哥哥自始至终都忍俊不禁。

youdao

I don't have an obligation to help anyone catch my brother.

我没有义务去帮助，想抓我兄弟的任何人。

youdao

These two guys were pushing me around until my brother, who's a beefy football player on the school team, came out and asked me if I needed help.

这句话的意思是：“正当那两个人在欺负我的时候，我哥哥出来问我要不要帮忙。”我哥哥是一个膀大腰圆的足球校队队员。

youdao

When I went as deputy marshal to help disarm and arrest them, I went as part of my duty and under the direction of my brother,the marshal.

VOA: special.2010.02.15

After seeing off my nephew, who left disappointed, I couldn't help blaming my brother.

NPR: 'A Tale of Music': From 'Literature from the Axis of Evil'