shipping cost n.运费
charge...for shipping 运费收......(多少钱)
【解释】
You can refer to the amount of money ，
that you pay to a company to transport cargo or goods as shipping. 运费
【例子】
Many companies also offer free shipping depending on your amount of purchase.
许多公司还根据你购买的量来包邮。
Customers will be offered free shipping on all orders during this holiday season.
在这个节日期间，顾客的所有订单都包邮。
Shipping costs are based on the destination country,
what you're shipping, and how much the package weighs.
运费取决于目的地国家、你要运送的物品以及包裹的重量。
This online store charges too much for shipping.
这家网店邮费收太贵了。
sec是"second秒"的缩写
【解释】
In online gaming, "seckill" means to kill an enemy within seconds
When it comes to shopping, “seckill” refers to a sales method
with which online vendors sell an expensive product at a low price far below market value for a given time period.
For example, they may sell an iPad for just one Yuan.
With such a low price, a lot ，
of Chinese netizens will flock to the website at the designated time,
constantly refreshing their screen until the given moment arrives.
For just one second, the price will plummet and the shopper ，
whose index finger clicks the fastest will walk away with an incredible bargain.
【例子】
This is the camera I got from seckilling. It was very cheap.
这台相机是我秒杀来的，非常便宜。
Lily: I want to buy a phone. 我想买部手机。
Ann: There are seckill sales online.
You can check them out. 网上有秒杀哦，你可以去看看。
positive review 好评
negative review 差评
fake review 假的评论
也可以把review换成“comment 评论”或“feedback 反馈”
【例句】
Online reviews—either positive or negative—can impact over 93% of consumers' decisions.
网上的评价，不管是好评还是差评，会影响93%的消费者的决定。
The more positive reviews a product gets,
the higher its visibility on Amazon's search pages.
一个产品的好评越多，
它在亚马逊搜索页的展示几率就越多。
One advantage of online shopping is that we can read online reviews.
There are written reviews,
pictures and even videos from other online shoppers,
which can help us to make better decisions.
网上购物的一个优点是，
我们可以阅读网上评价。
网上有其他购物者的书面评论、图片甚至视频，
这些可以帮助我们做出更好的决定。
