虽然在技术上历经过连续不断的改进，的翻译：Although technically through continuous improvement, 什么意思？中文翻译英文，英文翻译中文，怎么说？

青云英语翻译

Although technically calendar through continuous improvement,

Although technically through continuous improvement,

Although technically has had been through repeatedly the continuously improvement,

Although technically difficult, after continuous improvement

Although technically through continuous improvement,