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- thymine and uracil 胸腺嘧啶和尿嘧啶
- A nucleoside, C10H14N2O5, composed of thymine and deoxyribose. 胸腺定一种由胸腺碱和脱氧核糖构成的核苷C10H14N2O5
- One of the purines(adenine and guanine) or pyrimidines(cystosine, thymine, and uracil) that occurs attached to the sugar component of DNA or RNA. 碱基嘌呤（腺嘌呤和鸟嘌呤）或嘧啶（胸嘧啶、胸腺嘧啶和尿嘧啶）的一种，附着在脱氧核糖核酸或核糖核酸的糖分子上
- One of the purines(adenine and guanine)or pyrimidines(cystosine, thymine, and uracil)that occurs attached to the sugar component of DNA or RNA. 碱基嘌呤（腺嘌呤和鸟嘌呤）或嘧啶（胸嘧啶、胸腺嘧啶和尿嘧啶）的一种，附着在脱氧核糖核酸或核糖核酸的糖分子上
- One of the purines(adenine and guanine)or pyrimidines(cystosine,thymine,and uracil)that occurs attached to the sugar component of DNA or RNA. 碱基嘌呤（腺嘌呤和鸟嘌呤）或嘧啶（胸嘧啶、胸腺嘧啶和尿嘧啶）的一种，附著在脱氧核糖核酸或核糖核酸的糖分子上
- Results and Conclusion Five compounds can be isolated from the fungus,including ergosterol,ergosterol peroxide,uracil,thymine and cyclo-dipeptide(Leu-Leu). 结果与结论分离得到5个化合物,通过结构分析确定为麦角甾醇、过氧化麦角甾醇、尿嘧啶、胸腺嘧啶和环(亮-亮)二肽。
- The most abundant bases are cytosine, thiamine, and uracil (pyrimidines) and adenine and guanine (purines). 最丰富的碱基是胞嘧啶，胸腺嘧啶，尿嘧啶，腺嘌呤和鸟嘌呤。
- The other two, thymine and cytosine, are single ring structures called pyrimidines. 另两个为胸腺嘧啶和胞嘧啶,即称为嘧啶的单环结构。
- Thymine and the objective product,2'-deoxyadenosine,were enzymatically transferred from thymidine and adenine by Brevibacterium acetylium. 胸苷和腺嘌呤在乙酰短杆菌作用下转化成胸腺嘧啶和目标产物2’-脱氧腺苷。
- The results are confirmed by SEM, indicating that the competitive adsorption between PEI and uracil on the electrode surface are the main reason for the brightness. SEM结果证实，在镀银过程中，尿嘧啶与PEI之间的竞争吸附行为是形成光亮的银层的关键原因。
- The base ratio of 1:1 for the bases adenine and thymine and the bases cytosine and guanine was the first clue to the specificity of BASE PAIRING in the nucleic acids. 在核酸中的碱基配对高度专一性的原则决定了腺嘌呤与胸腺嘧啶，或鸟嘌呤与胞嘧啶之间的比值为1：1。
- The results of SERS suggested that PEI and uracil are competitively adsorbed instead of co-adsorbed on the silver surface, and the adsorption capacity of PEI is stronger than that of uracil. SERS结果表明，在银电极表面，尿嘧啶与PEI之间的吸附行为为竞争吸附，而非共吸附，且PEI的吸附能力强于尿嘧啶。
- I hit him fair and square on the jaw. 我不偏不倚打中他的下巴。
- It is a fact of life and you must face it. 这是严酷的现实，你必须面对它。
- In DNA, the two purine bases (adenine and guanine) always bond with the pyrimidine bases (thymine and cytosine), and the pairing is quite specific: adenine with thymine and guanine with cytosine. 嘌呤基（腺嘌呤，鸟嘌呤）总与嘧啶基（胞嘧啶，胸腺嘧啶）配对，并且配对有专一性：腺嘌呤对胸腺嘧啶，鸟嘌呤对胞嘧啶。
- She and I can't live under the same roof. 她和我不能住在一起。
- She had to scrimp and save to pay for her holiday. 她不得不为付假期的费用而苦苦攒钱。
- I'll try and rustle you up something to eat. 我设法给你弄点吃的。
- He sprang up and rushed to the door. 他跳起身，跑到门口。
- He took sick and died a week later. 他得了病，一周后就死去了。
