But the U.S. President's notoriously mercurial temperament is the X factor in all of this.

但美国总统那众所周知的善变性情给整件事情蒙上了一层未知因素。

Now you need to fine-tune your CV to ensure it's got the X factor that will have employers queuing up for your services.

现在你需要调整你的履历来确保它有那 X 因素，让雇主排队等你来上班的因素。

Stop acting like you just won the X Factor.

别装得跟你刚赢了《X音素》一样。

And now I feel like I'm the x factor.

可现在我觉得自己就跟未知数似的。

TV talent shows also ruled the airwaves with 8 million people voting for Alexandra Burke to win the X Factor, Britain’s most famous talent contest.

电视达人秀依然稳坐收视冠军。英国最受欢迎选秀节目《X音素》收到800万观众投票亚历山大·波尔克为冠军。

Signs and symptoms hemophilia A and B are nearly clinically identical, which makes sense since factors VIIIa and IXa work together in the coagulation cascade to activate factor X.

血友病A和B的体征和症状在临床上几乎相同，也说得通，因为因子VIIIa和IXa在凝血级联反应中，共同作用以激活因子X。

But I think because we know so much, we should put the X factor, you know, pretty high. What do you think Natalia.

但我认为，因为我们知道的太多了， 所以我们应该把 X 因素设置得相当高。你怎么看纳塔利娅。

Tissue factor turns inactive factor VII into activate factor VIIa (a for active), and then tissue factor goes on to bind the newly formed factor VIIa to form a complex that turns factor X into active factor Xa.

组织因子使无活性的因子VII转变为活性因子VIIa，之后组织因子结合新形成的因子VIIa，形成一个复合物将因子X转变为活性因子Xa。