同意 fengxianlixiang 的看法，下面是典型用例：

▲(both) at home and abroad 在国内外

The situation both at home and abroad is in our favour. 国内外形势对我们都有利。

Bids for the new bridge were invited from firms both at home and abroad. 国内外公司都被邀请对承建该座新桥投标。

The books about Harry Potter are very popular now, both at home and abroad. 有关哈利·波特的书目前在国内外都很流行。

▲from home and abroad 从国内外，来自国内外

We cordially welcome clients both from home and abroad. 竭诚欢迎海内外客商能给予我们支持和鼓励。

The messages of congratulation by post and telegraph poured in upon him from home and abroad. 贺信和贺电从国内外雪片似地向他飞来。