What follows is a sketch to indicate the lines along which progress could be made and which I have found helpful.

以下的描绘，显示可能的进展路线，我发现它们是有帮助的。

youdao

What follows is a sketch to indicate the lines along which progress could be made and which I have found helpful.

以下的描绘，显示可能的进展路线，我发现它们是有帮助的。

youdao