down-cutting(vertical erosion)

aglaiocypris tangkui al-shabaab angustifolia bismuth minerals blite bubble jet printer cirrus intortus evergreen broad-leaved forest flowering glumes hand fuel pump incarcerated placenta lagrange polynomials light mask put sb on the map relaxation behaviors SCI-ESRD setters-on thalarctos maritimuss tricyclics WBD (wideband data)