词汇	屋脊水沟
释义	屋脊水沟 Wū Jǐ Shuǐ Gōuridge-runner
随便看	difference of radius difference of reading difference of recovery and dilution difference of regional income distribution difference of role recognition difference of rolling output difference of rotation difference of sample means difference of school age difference of sea and land wind force difference of sets difference of settlement difference of sideslip angles difference of signal strength difference of slope Difference of Society Types difference of squares difference-of-squares difference of SST and SBT difference of supply and demand Difference of teachers difference of teaching methods difference of technological force difference of temperature difference of the chart datum