短語(yǔ)詞組短語(yǔ)labour safety and hygiene 勞動(dòng)安全衛(wèi)生labour hygiene standard 勞動(dòng)衛(wèi)生標(biāo)準(zhǔn);零部件標(biāo)準(zhǔn)school labour hygiene 學(xué)校勞動(dòng)衛(wèi)生military labour hygiene 軍事勞動(dòng)衛(wèi)生hygiene labour training 學(xué)生勞動(dòng)衛(wèi)生hygiene of labour training 學(xué)生勞動(dòng)衛(wèi)生safety and hygiene of labour 勞動(dòng)安全衛(wèi)生 返回 labour hygiene