// Synchronously enqueue — this never applies backpressure
举个例子，比如拍一张有三瓶矿泉水的照片，白天和晚上光线不同，整张图片的色温、亮度都变了，模型可能就不认识了。，推荐阅读搜狗输入法下载获取更多信息
，详情可参考91视频
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In total, directors generally spend between one and three hours a week on activities relating to their position on the Board of Directors.，更多细节参见Line官方版本下载