zhè / zhǒng / tī / cì / duì / xíng / kě / yǐ / ràng / hòu / pái / bù / duì / gèng / hǎo / de / zhī / yuán / qián / fāng

这种梯次队形可以让后排部队更好地支援前方。

This echelon formation allows the units in the rear to better support those in front.