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。
In all the less controversial fields, like the study of cacti or termites or the nature of nebulae,
在一切争议较小的领域里,如对仙人掌、白蚁或星云性质的研究,