序数词是：sixteenth
Sixteen years later ， the war is still raging .
十六年过去了，战火依然四处蔓延。
Sixteen years later the timing looks better .
十六年后，时机看起来更为成熟。
Sixteen years ago I was doing commercial photography .
十六年前，我开始从事商业摄影。
Twenty plus sixteen equals thirty-six .
二十加十六等于三十六。
Didn 't he have to leave ireland when he was only sixteen ?
他在十六岁时就不得不离开爱尔兰，是吗
