英语语法分析

One way to turn Germanic chieftains from potential enemies into loyal supporters was to offer them a good position in the Roman military.

为日耳曼部落首领在罗马军队中寻得一个好职位，是化潜在敌人为忠诚支持者的一种方式。

Diamond interprets them as power displays by rival chieftains who, trapped on a remote little island, lacked other ways of asserting their dominance.

戴蒙德将其解释为敌对酋长的权力展示，他们被困在一个偏远的小岛上，没有其他方式可以维护自己的统治地位。

Resentment against Germanic chieftains achieving high rank in the Roman military and factionalism among Roman leaders were among the causes of the period's considerable instability.

对于日耳曼部落首领在罗马军队中获得高地位的不满和罗马领导人之间的党派之争是该时期局势剧烈动荡的一部分原因。