cost creation 代价生成
Because of the added creation cost, use direct buffers only for long-lived buffers, not short, one-time, throwaway buffers.
因为创建直接缓冲区所增加的成本,所以直接缓冲区只用于长生存期的缓冲区,而不用于短生存期、一次性且用完就丢弃的缓冲区。
To justify the cost of model creation and maintenance, you need to ensure that your model is highly useful.
为了让模型创建和维护方面的成本物有所值,需要确保模型非常有用。
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