您要查找的是不是：
- improved SIR model 改进的SIR模型
- A Research on a Class of SIR Model with Transportation 一类具有迁移的SIR模型的研究
- Sir Peter was raised to the peerage. 彼得先生被封为贵族。
- I am sorry, sir, you are five kilo overweight. 对不起，先生，您的行李超重5公斤。
- Would you like to try this jacket on for size, sir? 先生，你要不要试穿一下这件夹克衫，看看尺寸是否合适？
- Is that all that you require, sir? 先生，您还要别的吗？
- I'm sorry, sir, the telephone line is busy. 对不起，先生，电话占线。
- I'm sorry, sir, we have no record of your booking. 对不起，先生，我们这儿没有您定房的纪录。
- We're sold out of Sunday papers, sir. 先生，星期日的报纸我们全卖光了。
- Have standards of morality improved? 道德标准是否有所改进？
- Could I interest you in this model, Sir? 先生，请你瞧瞧这个型号好吗?
- She is an improved edition of her mother. 她长得像她母亲但胜过她母亲。
- Our packing method shall be improved. 我们的包装方法应加以改进。
- I don't know whether you like flowers, sir. 先生,我不知道您是否喜欢花。
- His writing has improved greatly in this semester. 这学期他的写作有了很大进步。
- Is your holiday a reserved booking, sir? 先生，您来度假办理预订手续了吗？
- The relationship between them is being improved. 他们之间的关系正在改善。
- "Is this your vehicle, sir?" asked the policeman. “这是您的车吗，先生？” 警察问道。
- A reverend gentleman is here to see you, sir! 这里有位教士要见你，先生。
- Bell introduces the Model 300 improved handset. 贝尔实验室改进型电话听筒问世。
- 今日热词
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- 深远海浮式风电平台 - deep-sea floating wind power platform
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- 京雄高速公路 - Beijing-Xiongan expressway
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- 农业及相关产业增加值 - the added value of agriculture and related industries
