untrod

adj.

人迹罕至的；untread的过去式和过去分词；

v.

折回，退回( untread的过去式 )；

Helps for the Untrod Way; Or, Illustrative Sketches for Youth
[Identification of ancestral genes untroducing incongruence between gene and species tree].
“ ‘Return was difficult, by humane steps untrod…’ Milton’s Taming of Sin in A MASK, Paradise Regain’d, and Paradise Lost.”
UNA UNTRODUCCIÓN A LA POESIA DE LOS ESTADOS UNIDOS EN EL SIGLO VEINTE
Impacto do contato sobre as representaçoes tradicionais da doença e de seu tratamento : uma untroduçào
UNTRODUCCIÓN A LA INMUNOLOGÍA HUMANA
Kaufgesuch
Hospitality
Streams and Rivers of Minnesota
Transitive X-ray spectrum and PeV gamma-ray cutoff in the M87 jet: Electron "Pevatron"