It was a British castle or entrenchment, with triple rings of defence, rising roll behind roll, their outlines cutting sharply against the sky, and Jim's kiln nearly undermining their base.

那是一座英国城堡或壕沟，有三重防御环，一个接一个地上升，它们的轮廓在天空中锐利地切割，吉姆的窑几乎破坏了它们的基地。