英语语法分析

A narrow and flinty grand rue wound up a short incline.

一燧石铺成的窄道在这短斜坡上蜿蜒上升。

It was not a round pebble like the first, but a three-cornered one with sharp, flinty points.

这块石子与前一块不同，它不是圆的，而是带有三个又尖又硬的棱角。

The protection of these historic cities is faced with the flinty challenge and good opportunity.

历史文化名城保护正面临着严峻的挑战和前所未有的良好机遇。