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- Keywords volumetrid method;gravimetric method;thiofide of ZDBC;Zn; 容量法;重量法;橡胶硫化促进剂（ZDBC）;锌;
- thiofide of ZDBC 橡胶硫化促进剂（ZDBC）
- How can I persuade you of my sincerity? 我如何能够让你相信我的诚意？
- There is a vein of melancholy in his character. 他的性格中有少许忧郁的气质。
- A bowl of hot chicken soup is good for you. 喝一碗热鸡汤对你有好处。
- A cloud is a mass of vapor in the sky. 云是天空中的水汽团。
- This strain of wheat can grow during a cold spring. 这种小麦可以在寒冷的春天生长。
- Have a glass of beer to rinse your dinner down. 喝杯啤酒把你吃的晚饭冲下去。
- I bought a pair of tan leather shoes the other day. 前几天我买了双棕褐色的皮鞋。
- Your work falls short of my expectations. 你的工作未达到我的期望。
- He bit off a large piece of the apple. 他咬下一大块苹果。
- He emphasized the importance of careful driving. 他强调小心驾驶的重要性。
- I have a huge pile of letters to deal with. 我有一大堆信件要处理。
- He gave a description of what he had seen. 他描述了他所见到的一切。
- It is a fact of life and you must face it. 这是严酷的现实，你必须面对它。
- It is wrong of you to bully the child. 你不该欺侮那个孩子。
- I need a piece of string to tie this parcel up. 我需要一根细绳把这包裹扎起来。
- As a matter of fact, I've never been there before. 事实上我从未到过那儿。
- I think most of these obstacles can be surmounted. 我认为这些障碍大多数都是可以克服的。
- I think the work can be completed ahead of time. 我认为这项工作能提前完成。
