两面的

On both slopes of the roof there are broken tiles.

屋顶两面斜面都有破瓦片。

He writes on both sides of the sheet to conserve paper.

他在纸张两面都写字以节省用纸。

Utricles convex on both sides; rostra nearly equal to length of kernel; seed free from pericarp; leaves and bracts acicular to spinulose at apex.

胞果凸两面；喙差不多等于珠度；子果皮；对具微刺在先端针状叶和苞片。