trace的例句（trace在句子中的用法）

• We have lost all trace of him. 我们找不到他的踪迹。
• They could not trace him. 他们找不到他。
• He wanted to trace roughly. 他想草草地勾画。
• All trace of his working-class background was deliberately obscured. 他工人阶级出身的所有痕迹都给有意地隐藏起来了。
• There was not a trace of cynicism in his voice. 他的语气里没有一丝挖苦。
• How far back can you trace your family tree? 你的家谱可以追溯到多少代？
• Trace element mixes serve as insurances. 微量元素只是作为一种保障措施.
• His behavior extinguishes the last trace of affection she has for him. 他的这种行为使她对他的最后一丝爱慕之情荡然无存.
• They failed to find any trace of the runaways. 他们未能找到逃跑者的任何踪迹.
• He can find no trace of a rule requiring research to be vetted before publication. 他找不到任何要求研究成果在发表前需经审查的规定。
• You must recall everything, to the minutest trace left in your memory. 你一定要回忆起每一件事情, 甚至你记忆里留着的最细微的痕迹.
• They have spent ages looking at the map and can't find a trace of anywhere called Darrowby. 他们对着地图细看了许久也没能找到那个叫达罗比的地方的影踪。
• All trace of his working - class background was deliberately obscured. 他 工人阶级 出身的所有痕迹都给有意地隐藏起来了.
• Trace an analogy between pastoral poetry and landscape painting. 找出田园诗和风景画之间的相似之处.
• Because of its trace amount in the nature, it is always prepared by bio - mimetic synthesis methods. 昆布氨酸是昆布中一种具有降压活性的 非 蛋白质氨基酸,在昆布中的含量极少,一般采用仿生合成的方法制得.
• A metal trace element ( micronutrient ), essential for plant growth. 植物生长必需的一种微量金属元素 ( 微量营养素 ).
• An on line concentration technique was developed to determinate trace impurity in Zolmitriptan and Mexitil. 利用在线富集技术测定药物佐米曲坦和盐酸美西律中的痕量杂质.
• Methods: The serum PLA 2 , ALT lev els were detected by Trace titration and Reitman - Frankel methods. 方法: 用微量滴定法和赖氏法检测各型病毒性肝炎患者血清PLA2与ALT水平.
• Kelp is rich in vitamins and trace elements. 大型褐藻富含维他命和微量元素.
• I first went there to trace my roots, visiting my mum's home island of Jamaica. 我最初到那里是为了寻根，探访我妈妈的故乡牙买加岛。