理查德是他父亲的唯一继承人，因为他没有兄弟姐妹。

Richard was his father's only heir, as he had no brothers or sisters.

youdao

他没结婚，也没有兄弟姐妹，一个人单独居住。

Since he was single and had no brother or sister, he lived by himself.

youdao

杰克没有兄弟姐妹，他的爸爸也早死了。

Jack had no brothers or sisters. His father was dead.

youdao

杰克没有兄弟姐妹，他的爸爸也早死了。

Jack had no brothers or sisters. His father was dead.

youdao