secondary cause的用法和樣例：
例句
- Studies have reported that the primary cause of fragment loss is new dental trauma or the nonphysiological use of the restored tooth.
研究認為，牙碎片缺失的原發(fā)性原因是新近牙體創(chuàng )傷或對已修復牙齒施加非生理性作用力。 - Depth and particle size were primary and secondary environment variables that influence the community structure of brachyuran crabs in the present geographic region.
深度與沙粒粒徑大小，分別為影響調查區域內螃蟹群聚結構之主要與次要因素。
