Recurring revenue is the portion of the revenue that is going to continue in the future. It provides a growing base of revenue on which management can rely while focusing on ways to grow the business.on which, 为什这里要加介词on?
The number of babies born in China last year fell to a nearly six-decade low, exacerbating a looming demographic crisis that is set to reshape the world’s most populous nation and threaten its economic vitality.请问set to什么意思?