英语语法分析

The optimal conditions for synthesis of alkali green 4 include the carbamide and zinc chloride as catalyst, chloranil and bichrome.

合成碱绿色4的最佳条件包括：尿素和氯化锌作为催化剂，四氢呋喃和双色。

They say hydrogen peroxide or carbamide peroxide may also help.

他们说过氧化氢和过氧化脲也可能对此会有帮助。

They say hydrogen peroxide or carbamide peroxide may also help.

用过氧化氢或过氧化脲对此也有效。