USA standard的用法和样例：
例句
- Racial discrimination, accompanied by social isolation, intensified some dialectal differences between Black English and Standard English.
种族歧视和隔离政策加剧了黑人英语与美国标准英语之间的差异，也使黑人英语使用者难以融入美国主流社会。 - CPS Case Packing Systems has developed a new case-closer system to close display and standard American cases in one machine by using hotmelt.
郊野公园段装箱系统已经开发出一种新的情况下，更密切的系统，关闭显示器和美国标准的情况下在一台机器用热熔胶。
