您要查找的是不是：
- He vainly tried to mark the defacing stain out. 他试图除去有损外观的污迹，但没有成功。
- An electrically produced graph or tracing. 电示图以电制作的图表或映描图
- In fact, study on trace-making organisms and their traces in small estuaries can more effectively and directly provide theoretical evidence and biological and trace marks for estuary study. 事实上，小型河口湾的造迹动物及其遗迹的研究能够更有效、更直接地为河口湾的研究提供理论依据及生物和遗迹标志，意义重大。
- Her school work isn't quite up to the mark. 她的功课不大符合要求。
- I can't trace that letter you sent me. 我找不到你寄给我的那封信。
- That was just a lot of hot air what Mark said. 马克所说的不过是一大堆空话。
- He spoke without a trace of emotion. 他说话时毫不动感情。
- War has left its mark on the country. 战争给该国留下了不可磨灭的痕迹。
- The public scandal left a black mark on his career. 这一尽人皆知的丑闻给他的事业留下了污点。
- A record or tracing produced by a plethysmograph. 体积描记图由体积描记器作出的记录或轨迹
- Did the police find any trace of the murderer? 警方找到凶手的行踪了吗？
- How much do you know about the works of Mark Twin. 马克。吐温写的作品你知道多少？
- Happy anniversary, Helen and Mark! 海伦、马克，祝你们结婚周年快乐！
- They failed to find any trace of the runaways. 他们未能找到逃跑者的任何踪迹。
- Mark and Barbara are going together now. 马克与巴巴拉现在正在谈恋爱。
- There was barely a trace of salt in the soup. 汤里简直一点盐也没有放。
- The post office tried to trace the lost letter. 邮局设法查出那封丢失的信。
- The kids are learning to trace the letter. 孩子们学描字母。
- Mark has lost his job and is worse off than ever. 马克的工作丢了，情况比以前更糟。
- He always spoke with a trace of sarcasm. 他说话总带着一丝讽刺。
