英语语法分析

Skin dries and cracks painfully in the moistureless air.

皮肤在湿气全无的空气中干燥和干裂得发疼。

The reactions catalyzed by the Lewis acids occupy an important place in organic synthesis, but these reactions are normally processing under strict moistureless conditions.

路易斯酸催化的反应在有机合成中占有重要的比重，但这些反应通常需要在严格的无水条件下进行。