改进:问题7444无法重复 -- 发送邮件失败(waiting for upstream)
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Waiting For Upstream Messages 等待上游消息
waiting for upstream
等待上游
以上为机器翻译结果，长、整句建议使用 人工翻译 。
Upstream speeds are frequently the bottlenecks for cloud storage: an entire company might be held back waiting for that last presentation video to go online before the big meeting.
ENGADGET: Box Accelerator may triple cloud upload speeds versus its rivals, comes to syncing apps soon (video)
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