1. 海伦 (Hǎilún): This is the most common and direct translation, using the characters for "sea" (海) and "grace" (伦). It's a good general-purpose spelling for Helen.
2. 埃琳娜 (Āilínnà): This spelling uses the transliteration of Helen's name in Russian, which is more common in literary contexts or when referring to specific historical figures like Helen of Troy.
3. 赫莲 (Hèlián): This is another possible translation, using characters that sound closer to "Helen" in Mandarin. It's less common but still acceptable.
4. Other variations: You may also find other variations of these spellings, depending on the specific dialect or region.
Ultimately, the best spelling for Helen in Chinese depends on your specific needs and preferences.