surcharge
词根词缀：
前缀
sur-
1 上；超；外加
2 （常在同辅音词根前）下
surrender v. 放弃；投降
sur 下 + render 放弃 → 放弃；投降
surround v. 包围
sur 下 + round 圆圈 → 在下面围一圈 → 包围
surrounding n. 环境
surround + ing 表情况 → 周围的情况 → 环境
数据来源：新东方英语词汇速记大全
相关例句：
Typical application of live load surcharge.
活载超载的典型应用。
What's the surcharge on this express letter, please?
这封快信的附加费是多少？
Within a week after the protest started, there was talk of a tax surcharge on the wealthy.
抗议活动开始后的一周之内，就有人提出要向富人征收附加税。
There was also a small surcharge on the liabilities of too big to fail banks.
他还对那些大到不能倒的银行的负债提出了一项不高的附加税。
Could you tell me what the surcharge on this express letter will be?
你能告诉我这封快信的附加费是多少？
They regarded any surcharge on the original ticket price as barefaced robbery.
他们把原始票价以外的任何附加费用视为公然的抢劫。