vertical gradient of gravity
基本释义
重力垂直梯度
实用场景例句
学术讨论
The upkeep of historical buildings is crucial for cultural preservation.
维护历史建筑对于文化保护至关重要。
日常对话
The upkeep of the old car is becoming too expensive.
这辆旧车的维修费用越来越高。
留学生活
Maintaining a garden requires regular upkeep and attention.
维护花园需要定期维护和关注。
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