significant level的用法和样例：
例句
- For both sapwood and wetwood basal area, there were highly significant differences at various planting densities.
对边材面积和湿心材面积影响均达极显著水平。 - However, no significant difference was found as to the uptake and distribution of Fe in potato with film mulch and potash fertilizer.
钾肥在成熟期之前的一段时间内能在一定程度增大铁在块茎中的分布，但是此二因素对马铃薯体内铁的影响作用均未达到一定的显著水平。 - Upon a biological level, Sorrel assists with cellular communication.
在一个生物性水平上，酢浆草协助了细胞通讯。
