Why are you writing a grant for a classroom set of graphing calculators?

我们不能允许中学生使用计算器。

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He got three more from his parents through the years as birthday presents. His collection has since grown to 25 graphing calculators, and one broken one.

后来，父母又陆续送给他三台计算器，都是生日礼物。他后来总共收集了25台图形计算器，其中一台已经坏了。

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Products in the series have earned a strong reputation as graphing scientific calculators among both students and instructors involved in math education.

ENGADGET: Casio's touchscreen graphing calculator arrives in 2013, makes the TI-84+ look dated