The children all stood in a line.

孩子们全都站成一排。

She traced a line in the sand.

她在沙地上画了一条线。

A line of tanks came up the road from the city.

一排坦克由市里沿路开过来了。

Please stand in a line.

请站成一行。

The children form a line.

孩子们排成一行。