在绘制某些类型的图形时，这会是一项很有用的技巧。

This is a useful technique when drawing certain types of graphs.

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某些有用的类型，如小数的和字符串类型，是内置的。

Certain useful types, like decimal and string, are built in.

youdao

某些有用的类型，如小数的和字符串类型，是内置的。

Certain useful types, like decimal and string, are built in.

youdao