21.   The autopsy of the killer revealed no trace of alcohol, drugs, or medication, according to a medical expert cited by Focus.

22.   The beam created X-ray emissions with a spectrum that revealed traces of iron, copper and lead in the ink.

v. + trace >>共 113
find 31.29%
show 10.82%
leave 7.02%
contain 6.53%
have 5.75%
remove 3.80%
detect 3.31%
reveal 2.14%
bear 1.75%
see 1.56%
reveal + n. >>共 1410
detail 8.33%
name 4.12%
identity 4.00%
secret 2.72%
information 2.70%
source 1.95%
content 1.82%
plan 1.82%
evidence 1.07%
truth 1.04%
trace 0.36%
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