n.

a ditch dug as a fortification having a parapet of the excavated earth

a long steep-sided depression in the ocean floor

同義詞：deepoceanic abyss

any long ditch cut in the ground

Subduction and accretion in trenches
Earthquakes and bending of plates at trenches
Imprint of sub‐25 nm vias and trenches in polymers
In the autophagy trenches: The early research career of Russell L. Deter
Decadal Climate Prediction: An Update from the Trenches
Tsunami earthquakes and subduction processes near deep‐sea trenches
Defect reduction of selective Ge epitaxy in trenches on Si(001) substrates using aspect ratio trapping
Recrystallization kinetics of electroplated Cu in damascene trenches at room temperature
A Kinetic Model for Step Coverage by Atomic Layer Deposition in Narrow Holes or Trenches
Processes for pre-tapering silicon or silicon-germanium prior to etching shallow trenches