?登山时候
“No more than a few minutes, I should think,” he said, climbing down, his face red from heightened blood pressure.
下楼梯
下攀技巧
爬上爬下
英汉双解词典包含3185865条英汉词条,基本涵盖了全部常用单词的翻译及用法,是英语学习的有利工具。