用在线计算器做一个“金钱的时间成本”的计算，然后告诉他当他用一张利息17%的信用卡时会有多少债务滚滚而来。
Use an online calculator to do a "time value of money" calculation that shows him how much debt you can run up when you're using a credit card that charges 17% interest.
国家气象局(NWS)网站公布了一个方便的在线计算器便于大家基于温度和相对湿度或温度和露点的结合来计算炎热指数。
The NWS Web site features a handy on-line calculator for determining the heat index based on a combination of either temperature and relative humidity or temperature and dew point.
有许多在线工具可能帮助计算出你制造的碳排量，如碳排放计算器等。
There are various online tools that can help you work out the carbon emissions that you are producing, such as the carbon calculator.
氮计算器目前适用于美国、德国和荷兰。另一个在线计算器则适用于印度。
The nitrogen calculator is currently designed for people in the United States, Germany and the Netherlands. Another online calculator will be designed for India.
氮计算器目前适用于美国、德国和荷兰。另一个在线计算器则适用于印度。
The nitrogen calculator is currently designed for people in the United States, Germany and the Netherlands. Another online calculator will be designed for India.
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