When learning computer programming, I found it helpful to look at a function like a pencil sharpener. A parameter was a dull pencil, inside processes sharpened and returned a sharp pencil.
我在学编程时，常把程序比作卷笔刀，而把参数比作钝铅笔，经过处理我们就得到尖铅笔了。
He 'd like a pencil - sharpener, but she has not got one.
他想要一个转笔刀，但她没有。
Further other helpful materials that I would like your child to have includes a glue stick, coloured pencils (pencil crayons), coloured felts, a pair of scissors, a sharpener and ruler.
此外，我还希望您给孩子准备一个胶棒、彩笔、水彩笔、剪刀、削笔器和尺。
I'd like a red pencil and a pencil-sharpener.
我想买一支红色铅笔和一个铅笔刀。
I'd like a red pencil and a pencil-sharpener.
我想买一支红色铅笔和一个铅笔刀。
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