Discounting
vt. 折现；贴现；折扣；计算现值（discount的现在分词）
🗣️ 情景例句
I never bother servicing my own car, it's too much trouble.
我从来都不自己修车的，麻烦死了。
If they say you are good, ask yourself if it be ture.
若有人称赞你，要自问对不对。
Since that time, various types of hovercraft have appeared and taken up regular service.
从那以后，各种各样的气垫船出现了，并开始了定期航行服务。