音标: 英 [bɪləʊɡ'raʊnd] 美 [bɪloʊɡ'raʊnd]
1. The lockdown was triggered in the basement lab, which caused an immediate quarantine of all the belowground floors.
封锁是由地下室实验室触发的 这导致了所有地下楼层 都被立刻隔离