That's 80 billion different factors like watch time, click through rate, demographics, even freshness is considered.

这需要考虑 800 亿个不同的因素，例如观看时间、点击率、人口统计数据， 甚至新鲜度。

Don't mislead or overpromise, and all of that will lead to a high click through rate.

不要误导或过度承诺，​​所有这些都会带来高点击率。

These tools would evaluate the satisfaction of a YouTube user by using things like long click through rates and also how long they spent watching in a single watch session.

这些工具将使用诸如长点击率以及他们在单个观看会话中花费的时间来评估YouTube用户的满意度。