encumbers

in doing so it will need to acknowledge banks' vital contribution and distinguish that from the clutter of other financial activities that banks have accrued and now encumbers the system.

要这么做，它需要承认银行的重要贡献，并将之与银行逐渐形成、目前妨碍着整个体系的其它金融活动带来的混乱区别开来。

to a certain extent, mankind encumbers the earth.

在一定程度上，人类拖累了地球。

what encumbers it most is the integration of density function along rays in field. the method presents in the paper borrowed idea from volume method of ray casting, and greatly improves calculation efficiency.

其中的计算难点是光线在流场中的密度函数积分，文中利用光线投射原理改进原有的光线积分方法，有效地提高计算效率。

due to its scarcity of topological information, the entitative data model employed by lots of popular gis software largely encumbers the quantitative analysis of spatial adjacency.

而目前许多GIS软件所采用的空间实体数据模型并不包含拓扑信息，故难以定量地计算、分析地理对象间的空间邻接关系。