最近看到这个俄罗斯爆炸新闻 really 😱, 我觉得这事太可怕了啊.why would someone do such thing in a training center 🤔, just thinking about it makes me shiver 😅. 我想那些受伤的人好快恢复健康,希望他们的病情不会特别严重 😊. 这次爆炸 really exposes the security concerns of that country 😳.我 wonder what the authorities are doing to prevent such incidents in...