学个词--knell 今天我们要学的词是 knell. Knell is spelled K-N-E-L-L, knell.

knell 的意思是丧钟。 

The COVID-19 crisis could be the death knell for some polarizing office trends, such as the shared workspaces used by many technology startups to create a more casual and creative environment. 新冠病毒危机可能为一些两极分化的办公趋势敲响丧钟，例如许多科技初创公司为营造更加休闲和创意的环境而使用的共享工作区。

好的，我们今天学习的词是 knell, knell, knell ...