41. | Does the key fit the lock? |
| 这把钥匙能开这把锁吗?
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42. | The key grated in the lock. |
| 钥匙在锁眼中发出喀嚓声。
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43. | Each locker has its own individual key . |
| 每个小柜都有单独的钥匙。
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44. | Transport has always been the master key of trade. |
| 运输一向是贸易的关键。
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45. | This is the only key to the mysteries of his character. |
| 这是了解他性格奥秘的惟一线索。
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46. | Have you got the key for [of, to] the door? |
| 你有该门的钥匙吗?
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47. | Knowledge is a treasure, but practice is the key to it. |
| 知识是一座宝库,而实践是打开这宝库的钥匙。
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48. | The key to good health is to eat and sleep regularly. |
| 保持身体健康的秘诀是饮食和睡眠要有规律。
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49. | Gibraltar has been called the key to the Mediterranean. |
| 直布罗陀一向被称为地中海的门户。
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50. | The letter was written in an angry key . |
| 这封信是用愤怒的口吻写成的。
|