wú / lùn / yù / dào / duō / dà / de / kùn / nan / tā / dōu / tiě / xīn / yào / wán / chéng / zhè / ge / xiàng / mù

无论遇到多大的困难，他都铁心要完成这个项目。

No matter how great the difficulties are, he is firmly determined to complete the project.