1·They secretly entered into collusion with the northern warlords.
他们喑中和北洋军阀勾结起来。
2·In the reign of the Northern Warlords, with the frequent wars, education was stagnant.
北洋军阀统治时期，战祸不断，殃及教育。
3·Southern separatists, meanwhile, tend to see the strife in distant Sana 'a as a power struggle between northern warlords.
同时南部地区的分离主义分子乐于见到北部军阀在在遥远的萨发生冲突。
4·Struggles between Zhi and Wan warlords before May 4 Movement were internal fights for power and benefits among the Northern Warlords.
五四前，直皖斗争主要表现为北洋军阀内部争权夺利的斗争；