This part is also documented poorly and I did not understand it.
Network errors when the user’s network fails. It’s not your fault if the user turns their Internet off or has a slow connection!，详情可参考PDF资料
Chloe Jeffries, from the Gold Coast, was riding on a snowmobile with her mother in Hakuba Valley, Nagano prefecture, on Saturday when it overturned, trapping her underneath. She was airlifted to hospital but later died.，这一点在WPS下载最新地址中也有详细论述
Click through each one. Use them and see what feels right.