Discounting
vt. 折现；贴现；折扣；计算现值（discount的现在分词）
🗣️ 情景例句
Do you want something cold to drink?
想喝点什么冰凉的东西吗？
Choice of the end covers choice of the means.
选择目的包含著选择手段。
Drinks can be cooled by placing them on ice rather than adding ice to them.
可以把饮料置于冰块之上来冷却，而不是把冰块加进饮料之中。