symbiosis
noun [uncountable, countable]- (
biology 生物 the relationship between two different living creatures that live close together and depend on each other in particular ways, each getting particular benefits from the other 共生（关系） The birds live in symbiosis with the cattle, picking insects from their skin to eat. 这些鸟与牛共生，从它们的皮肤上采摘昆虫来吃。
a relationship between people, companies, etc. that is to the advantage of both 合作关系；互惠互利的关系 She imagined us living in a perfect mother and daughter symbiosis. 她想象我们生活在完美的母女共生中。
Word Originlate 19th cent.: modern Latin, from Greek sumbiōsis ‘a living together’, from sumbioun ‘live together’, from sumbios ‘companion’.