第2的英文怎么寫(xiě)

　　He lost by less than one second.

　　他以不到一秒鐘的差距輸了比賽。

　　He was the second to arrive.

　　他是第二個(gè)到的。

　　I bought the camera second-hand.

　　我買的這架照相機(jī)是二手貨。