词汇	hydrophobic chalk
释义	hydrophobic chalk 疏水白垩
随便看	trade union law trade union leaders trade union library trade union liquidationism trade union members trade union movement trade union movements trade union of basic level trade union of China trade union of enterprise trade union official trade union of Germany trade union organization trade union organizations trade union organize trade union organized on a company basis trade union parallelism trade union power trade union protect labor rights Trade Union Reform and Construction trade union regulation trade union representative trade unions trade-unions Trade Unions and Industrial Conflict