Tā zài jiàotáng lǐ shòuxǐ, zhèngshì chéngwéi Jīdūtú.
She was baptized in the church and officially became a Christian.
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culture
洗礼 is the noun form meaning 'baptism' or 'baptism-like ordeal.' 受洗 specifically means to undergo the rite. In broader usage, 经受洗礼 can figuratively mean to go through a trial that transforms you.
