1592953264000 1312632483000 term-41437 1616541194326 1312632534000 1616289961696 adlib fitz-online adlib-term-41437 57f2da03-7051-3f79-b45b-1eabefa597d5 2 1 ventilation, passive ventilation, passive term reference term-41438 adlib-term-41438 316a8d37-35a3-34cb-9a01-30cfbc2c18ab natural ventilation