Details.
The lockdown was unnecessary, but it allowed to communicate there was a real threat to a student made off campus via social media.
https://www.vcstar.com/story/n...
细节。
封锁是没有必要的，但它可以让人们了解到，通过社交媒体，校外学生受到了真正的威胁。
https://www.vcstar.com/story/n...