Our foreign trade policy has always been based on equality and mutual benefit and exchange of needed goods.
我们的对外贸易政策一向是以平等互利、互通有无为基础的。
and his hero was firmly rooted in his memories and experiences, and in both the history and the mythology of the vanished frontier.
他塑造的英雄人物深深地扎根于他本人的记忆和经历之中,也扎根于有关已经消失的拓荒生活的历史和神话之中。