banner,flag作“旗”讲怎么区别?

banner,flag作“旗”讲怎么区别? Flag和banner区别 ache,pain作“痛”讲,怎么区别? “国旗”的英语单词是flag,ensign,还是banner? 国旗歌是national flag anthem还是national banner anthem? banner和logo的区别 acid和sour作“酸的”讲怎么区别? retain和maintain作“保持”讲怎么区别? chief,main作“主要的”讲怎么区别? circular,round作“圆的”讲怎么区别? 作“因为”讲时,because,as,since,for有什么区别?都怎么用? bool型里Flag和flag有什么区别