No other changes to the defs are needed.
不再需要对 defs 作其他更改。
In the defs element I've added a path element that defines a circle for the rocket to move around.
在defs元素中，我添加了一个path元素，用于定义火箭移动所沿着的圆圈。
Then, in the body (outside the defs) I draw a rectangle over the whole page, filling it with the line pattern.
然后，在代码体中(defs之外)，我在整个页面上绘制了一个矩形，用线条模式进行填充。
Because Groovy is a dynamically typed language, defs do not require any type declarations for parameters, nor do defs require a return statement.
因为Groovy是动态类型的语言，所以def不需要对参数作任何类型声明，def也不需要return语句。
DEFS is the path containing the Python GTK + binding definitions files.
DEFS是包含pythonGTK +绑定定义文件的路径。
DEFS is the path containing the Python GTK + binding definitions files.
DEFS是包含pythonGTK +绑定定义文件的路径。
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