sentences: as air pressure surrounding a flexible container decreases , that flexible container will expand
docs: passive_transport is membrane_transport. flexible_container is flexible_thing. aerosol_can is pressure_barrier_container. submarine is pressure_barrier_container. flexible_container is container_product. non_resealable_storage_can is pressure_barrier_container. air_cushion is compressed_air. pressure_barrier_container is container. container has smaller_object membrane_transport_osmosis is passive_transport.