Some associations of species are almost a form of commensalism .

有些种类的组合几乎是共栖的形式。

Commensalism - one gets ( physical ) benefit , one feels no effect .

片利共生:一只取得(物理的)好处,另一只感觉没有影响。

Types of symbiotic relationships include parasitism , where one partner benefits at the expense of the other , commensalism , where one partner profits without harming the other , and mutualism , in which both partners benefit .

共生关系的类型包括寄生，指一方牺牲另一方的利益来获益；共栖，一方获益，另一方不受损；互利共栖，双方都受益。