metres
A metre is a metric unit of length equal to 100 centimetres.
She's running the 1,500 metres here.
她正在这儿跑1500米。
He won the 400 metres freestyle.
他在400米自由泳中获胜。
The tunnel is 10 metres wide and 600 metres long.
该隧道宽10米,长600米。