optional charge

英 [ˈɒpʃənl tʃɑːdʒ]

美 [ˈɑːpʃənl tʃɑːrdʒ]

选港费

One real advantage of the focus is that you can buy an optional home charging system that will charge the car in four hours, about twice as fast as the all-electric Nissan LEAF.
它还拥有一大优势，即车主能买一台备选的家庭充电装置，它能在4小时内充满电，这个速度几乎是日产聆风（NissanLeaf）充电时间的两倍。
He said diners drank only water and never paid the optional service charge.
经理表示餐厅的客人只饮用水，也不会付任何其他服务费用。
Optional charge picked port in the United Kingdom
任选港附加费；选择卸货港费；选择卸货港所增运费在联合王国选定港口
Many independent schools in America already add an optional bursary charge on to the bill and Sir Peter would like to see the tradition adopted here.
美国的很多独立学校已经在学费之外增加了一笔可选性的奖学金费用，彼得爵士希望英国的传统学校也采纳这一做法。
In our country, optional charge, the redundant charge, to exceed authority at will to collect charge and the charge inflation, the charge invaded the tax is quite serious.
在我国，行政机关随意收费、重复收费、越权收费等乱收费现象比较严重，收费膨胀、费挤税的问题也相当突出。