n.

a just detectable amount

"he speaks French with a trace of an accent"

同義詞：hintsuggestion

an indication that something has been present

"there wasn't a trace of evidence for the claim"

同義詞：vestigetinctureshadow

a suggestion of some quality

同義詞：touchghost

a drawing created by superimposing a semitransparent sheet of paper on the original image and copying on it the lines of the original image

同義詞：tracing

either of two lines that connect a horse's harness to a wagon or other vehicle or to a whiffletree

a visible mark (as a footprint) left by the passage of person or animal or vehicle

The book of traces
Traces of human migrations in Helicobacter pylori populations.
Colorimetric Determination of Traces of Metals.
Characteristics of WWW Client-based Traces
A New Analysis of Thermogravimetric Traces.
Colorimetric Determinations of Traces of Metals.
MPEG-4 and H.263 video traces for network performance evaluation
Exposing digital forgeries by detecting traces of resampling
Ewing, B. & Green, P. Base-calling of automated sequencer traces using PHRED. II. Error probabilities. Genome Res. 8, 186-194
Ewing B, Hillier L, Wendl MC et al.Base-calling of automated sequencer traces using PHRED. I. Accuracy assessment. Genome Res 8:175-...