Wear a face mask andreceive body temperature check before entering the office building.
在进入办公大楼前应佩戴口罩，并接受体温检查。
2
Finally, check whether the global counter reached zero, and if so, invoke the receive activity waiting in the main scope.
最后，检查全局计数器是否已达到零，如果是，调用主范围中等待的接收活动。
3
Additionally you can receive notifications andcheck email accounts including popular services like Gmail, Hotmail, or any service that supports IMAP or pop.