n.汗衫；单衬衣；单(谱)线
He wore dungarees and a singlet, patched, but neat and clean. 他穿着粗布工装裤和背心，上面打着补丁，却很整洁。
Singlet oxygen is a special form in existence, which is strongly bioactive. 单线态氧是氧分子的一种特殊存在形式
Singlet oxygen is a special form in existence,which is strongly bioactive. 单线态氧是氧分子的一种特殊存在形式,具有很强的生物活性。
n.独生子；单身；(扑克牌)单张；单例模型
n.系曳绳的横木
