- An elongated bicycle seat that usually curves upward in the back.香蕉座：延长了的自行车座，后部通常向上弯曲
- [From its shape] [从其形状而来]
- second–class
- second–degree burn
- second–generation
- second–guess
- second–rate
- second–strike
- second–string
- secrecies
- secrecy
- secret
- secret
- secreta
- secretae
- secretagogue
- secretagogues
- secretariat
- secretariat
- secretariate
- secretariats
- secretaries
- secretary
- secretary
- secretary bird
- secretary-general
- secretary–general