- The period of time covering the physical formation and development of the earth, especially the period prior to human history.地质时期：地球物质形成和发展的时期，尤指人类历史前的时期
- cytophotometry
- cytoplasm
- cytoplasm
- trading post
- trading stamp
- tradition
- TRADITION
- traditional
- traditional
- traditionalism
- traditionalisms
- traditionalize
- traditionalized
- traditionalizes
- traditionalizing
- traditions
- traditor
- traditores
- traduce
- traduced
- traduces
- traducianism
- traducianisms
- traducing
- Trafalgar