It’s time to pull the plug on plug-in hybrids
If the subject line of the email is irrelevant to customers, they will ignore it multiple times. But, if it keeps repeating, they are intercepted and unsubscribed from your emails. So, send relevant emails for the benefit of the customer. Don't send emails that often only focus on sales, offers and discounts.
，这一点在WPS官方版本下载中也有详细论述
func process2(c chan task) {
Овечкин продлил безголевую серию в составе Вашингтона09:40