nodus
n. 困难，难点，困难环节，复杂情况；结
复数 nodi
例句
It treatise especially new requests of howff of new times, the nodus and essentiality of landscape creativity.
它特别论述了对新时代的新要求，景观创造的结点和必要性。
Tissue origin of parenchyma tissue sarcoma and sorts of malignancy lymphoma are nodus.
软组织肉瘤的组织起源和淋巴瘤的分类是重点中的难点。
Therefore, the research about safety of P2P has been a hotspot and nodus in network field recently.
因而，研究P 2 P的安全性，是近年来网络安全研究的一个热点和难点。
