婚礼誓词的力量在于其表演性，说出的话语实际上就完成了婚姻的缔结。

The power of wedding vows lies in their ___performativity, as speaking the words actually completes the marriage act.

根据表演性理论，性别身份是通过日常社会互动不断塑造的，而非天生的。

The theory of ___performativity suggests that gender identity is continuously shaped through daily social interactions, not innate.