原文：

A ship carrying 250 African children thought to have been sold into slavery is on its way back to Benin after two countries turned it away, police sources in Benin said on Thursday.

The children, from Benin and neighbouring Togo, were believed to be caught up in a lucrative trade in minors sold by poor families and forced to work abroad on plantations or as domestic servants.

注读：

A ship carrying 250 African（非洲的） children thought to have been sold into slavery（奴隶制） is on its way back to Benin（贝宁） after two countries turned it away, police sources in Benin said on Thursday.

The children, from Benin and neighbouring Togo（多哥）, were believed to be caught up in a lucrative（赢利的） trade in minors（儿童） sold by poor families and forced to work abroad（国外） on plantations（种植园） or as domestic（国内的） servants（仆人）.

语言点精解：

A ship carrying 250 African children thought to have been sold into slavery¹ is on its way back to Benin after two countries turned it away, police sources in Benin said on Thursday.

The children, from Benin and neighbouring Togo², were believed to be caught up in a lucrative trade in minors sold by poor families and forced to work abroad on plantations or as domestic servants³.

1.此部分为过去分词短语作定语。
2.此部分为介词短语作定语。
3.此部分为过去分词短语作定语。