weak mass groups的用法和樣例：
例句
- Whether this will set a precedent for many other aggrieved groups is doubtful.
這是否會(huì )成為其它許多受過(guò)不公平對待的種族的先例尚且無(wú)法確定。 - U.S. manufacturers have long complained that Beijing is keeping the Chinese yuan artificially weak, to give its exporters an unfair trade advantage.
美國制造商長(cháng)期以來(lái)一直抱怨中國人為地保持人民幣疲軟，從而使中國出口商得到不公平的貿易優(yōu)勢。
