cumber

沉重的背包拖累了他的登山速度。

The heavy backpack began to ___cumber his climbing pace.

过度的行政程序会妨碍创新项目的推进。

Excessive bureaucracy may ___cumber the progress of innovative projects.

那些过时的规则阻碍了这个部门的高效运作。

Outdated regulations ___cumber the efficient operation of this department.