习惯用语regain one's footing1.恢复身体的平衡, 重新站起来特殊用法moisture regain1.回潮; 吸湿(性); 回湿性natural regain1.自然吸湿率; 正常吸湿率solvent regain1.吸溶剂量standard regain1.标准回潮