He worked to remove all traces of blood.
他忙着清除所有的血迹。
Wash them in cold water to remove all traces of sand.
用冷水冲洗它们以清除所有的沙子。
Wash them in cold water to remove all traces of sand .
用冷水冲洗它们以清除所有的沙子。
The aim of washing was to remove all detectable traces of DNA.
擦洗的目的是去除所有易被察觉的DNA。
The aim of washing was to remove all detectable traces of DNA.
擦洗的目的是去除所有易被察觉的DNA。
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