abrupt slope belt的用法和样例：
- Moreover,we also illuminated the sequence strati-graphic pattern of abrupt slope belt , the sequence feature and superposition pattern of system tracts, sub-sequence group and subsequence.
- Sequence stratigraphic characteristics of abrupt slope belt in Jiyang Depression
- She do not dare to bike down the abrupt slope.
- Hospitably warning:Be care for the abrupt slope.