During the trials, the robot algorithms (算法) and mechanics will be fine-tuned to make it better suited to ailing livestock and ensure it safely navigates around potential hazards including trees, mud, swamps, and hills.
2018年12月六级真题（第三套）阅读 Section C
柯林斯高阶英汉双解学习词典释义
N-VAR
沼泽(地)
A swamp is an area of very wet land with wild plants growing in it.
VERB
淹没;浸没
If something swamps a place or object, it fills it with water.