"There were engineers and managers saying it couldn't be done, all these reasons why it was too dangerous," she says.
'They didn't listen, now we have to live with that'，这一点在搜狗输入法下载中也有详细论述
totalBytes += chunk.byteLength;，详情可参考同城约会
Shortcuts: For common scenarios, we pre-calculate the travel time/distance (the "shortcut") between border points within the same cluster and also to border points of immediately adjacent clusters.