something immaterial that stands in the way and must be circumvented or surmounted

an obstruction that stands in the way (and must be removed or surmounted or circumvented)

an obstruction that stands in the way (and must be removed or surmounted or circumvented)

something immaterial that stands in the way and must be circumvented or surmounted

something immaterial that stands in the way and must be circumvented or surmounted

an obstruction that stands in the way (and must be removed or surmounted or circumvented)

an obstruction that stands in the way (and must be removed or surmounted or circumvented)

something immaterial that stands in the way and must be circumvented or surmounted

an obstruction that stands in the way (and must be removed or surmounted or circumvented)

an obstruction that stands in the way (and must be removed or surmounted or circumvented)