This is because the top of the troposphere is normally very cold, causing ascending water vapour to freeze into ice crystals that drift and fall, rather than continuing up into the stratosphere.

这是因为对流层的顶端通常极其寒冷，上升的水蒸汽凝结成飘落而下的冰晶，而没有继续上升进入平流层。

youdao

The water absorbency was descended with the ascending of the concentration of the external ion solution and the valence of the ion.

实验结果表明：随着外部盐溶液浓度的增大及盐离子的价态的升高，复合材料的吸液率下降；

youdao

During practical production, due to heterogeneity and control ascending of water cut latterly, reservoir pressure will be below bubble point pressure locally.

在实际生产过程中，由于储层非均质性，以及开发后期为了控制含水的上升，油藏中局部地区的压力会降到饱和压力之下。

youdao

As the water neared its boil the ascending pitches of our teakettle's tremble are so familiar to me I reached for the telephone and dialed Rema's cell.

NPR: Excerpt: 'Atmospheric Disturbances'

As Spirit began ascending some hills about two miles from its landing site, it found signs that water was once on this part of Mars, too.

NPR: Mars Rover Marks Second Anniversary of Landing