强直性脊柱炎qiáng zhí xìng jǐ zhù yánqiangzhixingjizhuyanankylosing spondylitisBechterew’s diseaseCharacters in this word强strong, powerful, energetic性sex, nature, character柱to lean on炎flame, blaze直straight, vertical脊spine, backboneStudy it in Yanamino