1N-UNCOUNT 共生(关系)Symbiosis is a close relationship between two organisms of different kinds which benefits both organisms. 共生(关系) [technical]
...the link between bacteria, symbiosis, and the evolution of plants and animals.
细菌、共生和动植物进化之间的联系
2N-UNCOUNT 互惠互利的关系;共赢关系Symbiosis is any relationship between different things, people, or groups that benefits all the things or people concerned. 互惠互利的关系;共赢关系
...the cosy symbiosis of the traditional political parties. [+ of]