| 单词 | careful supervision |
| 释义 | careful supervision The pages are so delicate that it took three hours to switch it to a special stand under careful supervision. The Sun Deep dives should be made only after a gradual training to test the individual diver's sensitivity to increasing depths, with careful supervision and logging of reactions. Retrieved from Wikipedia CC BY-SA 3.0 When the school took possession of the building, the stairwell was enlarged, but under careful supervision in respect to the building's status as a protected historical monument. Retrieved from Wikipedia CC BY-SA 3.0 |
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