相关单词近義詞 strengthen 加強, harden (使)變硬, build up 建立, reinforce 加固, fortify 加強, shore up 支撐, beef up 加強, firm up 鞏固, acclimate 使習慣於新環境..., steel 鋼鉄臨近詞toupee, tough, toughener, toughening, toughen up, Toughened ABS, toughened wax, toughening oil, Toughened HDPE, toughened paper, toughened glass, toughened degree相似詞tough, tough love, tough luck idiom, tough sth out, toughie, toupée, tour, tour de force, 返回 toughen