| 1. | This book is too theoretical ; I need a practical guide. |
| 这本书理论性太强,我需要一本实用手册。
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| 2. | Lendl's strength onclay gives him a theoretical advantage. |
| 兰德尔体格健壮,按说他占些优势。
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| 3. | He has only a theoretical knowledge of the language. |
| 他只有这种语言的理论知识。
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| 4. | they aroused great interest at the time, they had important theoretical consequences, and they provided a striking demonstration of the potentialities hidden in instruments and apparatus. |
| 这些观察当时引起人们极大的兴趣，具有重要的理论意义，并充分显示出了仪表和仪器的潜在力量。
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| 5. | a theoretical physicist |
| 理论物理学家
|