caving例句
2024年07月03日 10:23:06
He had always wanted to go
caving .
他过去一直想探索洞穴。
With the roof
caving in, there were an increasing number of desertions.
由于大势已去, 逃兵的人数日益增多.
The positively charged AlCl _ 2 - MMH - bentonite mud system possesses more powerful anti -
caving capacity.
AlCl_3-MMH-膨润土体系可成为防塌作用更强的正电泥浆.