Christianity is a religion that is based on the teachings of Jesus Christ and the belief that he was the son of God.
例句
He converted to Christianity that day.那天，他皈依了基督教。
英英詞典釋義
Noun
1. a monotheistic system of beliefs and practices based on the Old Testament and the teachings of Jesus as embodied in the New Testament and emphasizing the role of Jesus as savior
2. the collective body of Christians throughout the world and history (found predominantly in Europe and the Americas and Australia);
"for a thousand years the Roman Catholic Church was the principal church of Christendom"