“单独地”用英语怎么说

自1821年以后, 他单独地发展了复函数理论.From 1821 on, he singlehandedly developed complex function theory.保证生气勃勃和卫生学, 我们的曲奇饼单独地被包装.To ensure freshness and hygiene, our cookies are individually packed.您完全地和单独地负责遵守指示.You are completely and...

“单独地”的拼音为：dān dú de...