inaccessible area meaning in English

不易达到的区域
难以接近的地区
偏僻地方

Complete protection every part of a galvanized article is protected even receses sharp corners and inaccessible areas
制件之每一部份都能预期镀上锌，所以即使在凹陷处、尖角及隐藏处都能受保护。
Dental floss is highly recommended as there are inaccessible areas such as in - between teeth surfaces and some tooth surfaces that cannot be thoroughly cleaned by a toothbrush
刷牙只能清洁牙齿表面，要清除牙缝里的牙菌膜，就要使用牙线。
The system is highly portable ; mounted on an off road vehicle , tripod or even a back pack allowing surveys can be undertaken in the most remote and inaccessible areas
该系统是非常便携;装在一个越野车,三脚架,甚至背包,让调查能够在最偏远的地方