说明地 meaning in Chinese

explanatorily

Some use the normative namespace , but some unaccountably use variations such as
一些示例使用标准化名称空间，但另一些不加说明地使用诸如
Many , but not all , of the larger plumes are situated along spreading centers , suggesting that plumes may be instrumental in the formation of rifts and the origin of new spreading centers
很多的，但不是所有的较大的地慢羽沿着扩张中心分布开来，说明地慢羽在裂隙形成和新扩张中心的诞生中可能是起作用的。