What are the Three Gems (Tiratana)?
“三宝”是什么？

The Three Gems are the Gem of the Buddha, the enlightened one, the Gem of Dhamma, the teachings given by the Buddha, and the Gem of Saṅgha, the Order of the Buddha's monastic disciples. These three are called gems (ratana) because they can lead people to stop doing evil and to perform kindness, to free themselves from suffering and to gain happiness. The title of "The Three Gems" also shows the great value placed on them. When the Buddha initially turned the wheel of Dhamma, Koṇḍañña and others, five of them in all, followed the Buddha, renounced lay life and became the Buddha's disciples, thus forming the Saṅgha Order. Therefore, the Three Gems have been cherished since that time.
佛陀是佛宝。佛所说的法是法宝。佛的出家弟子的团体——僧伽（Saṅgha）是僧宝。称之为宝，是因为它能够令大众止恶行善、离苦得乐，是极可尊贵的意思。佛初转法轮，憍陈如等五人都归依佛，出家为弟子，于是形成了僧伽。所以说，从那时起开始具足了三宝。