记忆方法
将“doctoral”分解为“doctor”（医生）和“-al”（形容词后缀，表示属于……的），想象一个与医生相关的学术地位，比如博士学位，这就构成了“属于博士的”或“博士级别的”。这种方法通过构建一个相关的场景来帮助记忆。
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权威例句
- 1. His doctoral dissertation on differential equations connected itself with existence theorems.
- 他论述微分方程的博士论文涉及到存在理论.
- 2. He wrote his doctoral thesis on electromagnetism.
- 他写有关电磁的博士论文.
- 3. He was involved in writing his doctoral dissertation.
- 他在聚精会神地写他的博士论文.
- 4. Signed, Patrick Mahoney. Underneath his name he conferred upon himself four or five doctoral titles.
- 署名PatrickMahoney,后面自赠了四五个博士头衔.
- 5. He advised me to write a doctoral dissertation and stay to work in France.
- 他劝我写一篇论文,得一个博士学位,留在法国工作.