1. The murderer was traced to Paris. �Ǹ����ֱ��ٵ����衣
2. True friendship is pure, not a trace of dirt doping. �����������Ǵ���ģ��������һ˿�۹���
3. The composition of oxygen isotope is a good tool to trace the origin and formation environment of sulfate. ��ͬλ�������һ���dz���Ч��ʾ�������ε���Դ���γɻ����Ĺ��ߡ�
ӢӢ����
n.
1. a just detectable amount
2. an indication that something has been present
3. a suggestion of some quality
4. a drawing created by superimposing a semitransparent sheet of paper on the original image and copyin
5. either of two lines that connect a horse's harness to a wagon or other vehicle or to a whiffletree
6. a visible mark (as a footprint) left by the passage of person or animal or vehicle v.
1. follow, discover, or ascertain the course of development of something
2. make a mark or lines on a surface
3. to go back over again
4. pursue or chase relentlessly
5. discover traces of
6. make one's course or travel along a path; travel or pass over, around, or along
7. copy by following the lines of the original drawing on a transparent sheet placed upon it; make a tr
8. read with difficulty
�ɿ�Ӣ�� - 划词释义
