查询结果:

n. 侵略者;挑衅者;侵略国 

拆分: ag-朝向 + -gress-步,级 + -or名词词尾,...者 ⇒ 步步紧逼者   

例:
A succession of military defeats weakened the aggressor. 一连串的军事失败削弱了侵略者。 
The treaty was to the aggressor’s advantage. 条约对侵略者有利。 
The chief aggressors were Germany, Japan and Italy in World War Ⅱ. 二次世界大战中的主要侵略者是德国、日本和意大利。 
The aggressor troops marched into the neighbouring country on the pretext of searching for their missing soldier. 侵略军开进一个邻国,借口寻找他们失踪的士兵。