defensive circle造句怎么写

4、Their large shields, and spears make them a solid defensive unit, able to resist attacks from both foot and horse, so long as they are well supported. If necessary they can form a defensive circle.

2、The other three men slowly moved back to the hut to form a defensive circle.

1、Magnus's army was gradually pushed back into a defensive circle.

3、Magnus's army was forced to gradually withdraw from the defensive circle.