If you are bad with math, bring a calculator with a currency function.
要是你数学不好，带一台有汇率转换功能的计算器。
The tan function on the calculator was not working.
计算器上的正切函数用不了了。
Handheld personal digital processing system, realize the mail list, calendar, calculator, electronic drawing board function.
说明：掌上个人数字处理系统，实现通讯录、日历、计算器、电子画板功能。
Handheld personal digital processing system, realize the mail list, calendar, calculator, electronic drawing board function.
说明：掌上个人数字处理系统，实现通讯录、日历、计算器、电子画板功能。
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