trace

He could detect a trace [=hint] of cinnamon in the cookies.他能从饼干里尝出一丝肉桂的味道。

She spoke without a trace of irony.她说话不带有任何讽刺。

Trace amounts of the pesticide were found in many foods.许多食物中都发现了少量农药残留。

The scientists found traces of human activity in the area.科学家们在这个地区找到了人类活动的遗迹。

The thieves left no trace of evidence behind.小偷们没有留下任何罪证。

He disappeared/vanished without a trace. [=without leaving any signs to show where he went]他消失得无影无踪。

The children traced their hands onto the sidewalk with chalk.孩子们用粉笔在人行道上画手印。

You can put a piece of paper over the pattern and trace it.你可以在图案上放一张纸来描摹。

She traced the letters of her name.她认真地写下了自己的名字。

I traced a circle in the air/sand (with my finger).我（用手指）在空中/沙地上画了一个圆圈。

She traced the letters out on a sheet of paper.她在一张纸上写下了这些字母。

We will need to trace the electrical wires through the walls.我们得沿着墙壁上的电线检查。

She traced the edge of the book with her finger. [=she moved her finger along the edge of the book]她的手指顺着书的边沿移动。

The noise was traced to a loose bolt in the car's engine.噪声是由汽车发动机里一颗松动的螺丝引起的。

The police traced the call to a payphone.警方追查到这个电话是用公用付费电话打来的。

He can trace his family history all the way back to the Pilgrims.他可以把他的家族史一直追溯到清教徒移民的时代。

The word “amiable” can be traced back to the Latin word for “friend.”单词amiable（友善的）的词源可以追溯到拉丁语表示friend（朋友）的词。

The word “amiable” traces back to the Latin word for “friend.”单词amiable（友善的）源于拉丁语表示friend（朋友）的词。

a tradition that traces back to [=goes back to] the time of the ancient Romans源自古罗马时代的传统

Her book traces the development of art through the ages.她的这本书追述了艺术的发展史。

The detective is in charge of tracing [=(more commonly) tracking down] missing persons.这位侦探负责查找失踪人员。