| 单词 | trace | 
| 释义 | trace1 of 3noun (1)   ˈtrās   1   a     : a minute and often barely detectable amount or indication  a trace of a smile    b     : an amount of a chemical constituent not always quantitatively determinable because of minuteness   2   a     : a mark or line left by something that has passed    also : footprint    b     : a path, trail, or road made by the passage of animals, people, or vehicles   3   a     : a sign or evidence of some past thing : vestige    b     : engram   4    : something (such as a line) traced or drawn: such as    a     : the marking made by a recording instrument (such as a seismograph or kymograph)    b     : the ground plan of a military installation or position either on a map or on the ground   5   a     : the intersection of a line or plane with a plane    b     : the usually bright line or spot that moves across the screen of a cathode-ray tube    also : the path taken by such a line or spot   6   archaic   : a course or path that one follows    traceless    ˈtrās-ləs   adjective trace 2 of 3verb  traced; tracing    transitive verb 1   a     : delineate, sketch    b     : to form (letters, figures, etc.) carefully or painstakingly    c     : to copy (something, such as a drawing) by following the lines or letters as seen through a transparent superimposed sheet    d     : to impress or imprint (a design or pattern) with a tracer    e     : to record a tracing of in the form of a curved, wavy, or broken line  trace the heart action    f     : to adorn with linear ornamentation (such as tracery or chasing)   2   a     : to follow or study out in detail or step by step  trace the history of the war    b     : to discover by going backward over the evidence step by step  trace your ancestry    c     : to discover signs, evidence, or remains of    d     : to follow the footprints, track, or trail of   3    : to lay out the trace of (a military installation)   4   archaic   : to travel over : traverse   intransitive verb 1    : to make one's way    especially : to follow a track or trail   2    : to be traceable historically    traceability    ˌtrā-sə-ˈbi-lə-tē   noun trace 3 of 3noun (2)1    : either of two straps, chains, or lines of a harness for attaching a draft animal to something (such as a vehicle) to be drawn   2    : leader sense 1e(2)   3    : one or more vascular bundles supplying a leaf or twig   trace 1 of 2 verb1  as in to outline   to draw or make apparent the outline of trace your hand onto this piece of paper   Synonyms & Similar Words Relevance     
 2  as in to track   to go after or on the track of police traced the burglar back to his apartment, where they discovered a ton of stolen loot   Synonyms & Similar Words 
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 trace 2 of 2noun1  as in trail   a mark or series of marks left on a surface by something that has passed along it the wolf came and went without leaving a trace on the hard, dry ground   Synonyms & Similar Words 
 2  as in route   a passage cleared for public vehicular travel an old trace that dates back to the days of the covered wagon   Synonyms & Similar Words 
 3  as in path   a rough course or way formed by or as if by repeated footsteps stay on the trace, or you'll get lost in these thick woods   Synonyms & Similar Words 
 4  as in vestige   a tiny often physical indication of something lost or vanished a ship that appears to have vanished without a trace on the high seas   Synonyms & Similar Words 
 5  as in shred   a very small amount doctors detected only a trace of bacteria in the blood sample but put the patient on antibiotics just in case   Synonyms & Similar Words 
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 6  as in hint   an almost imperceptible sign of something there didn't seem to be so much as a trace of the truth to anything he said   Synonyms & Similar Words 
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 7  as in footstep   the mark or impression made by a foot followed the traces of the deer into the deep woods   Synonyms & Similar Words 
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