The problem is this headache and this stress, we know from research, leads to low performance.

问题是，我们从研究中得知，这种头痛和压力会导致表现不佳。

Burnout is physical, emotional or mental exhaustion that causes decreased motivation, low performance and negative attitudes.

过度劳累是指身体、情感或精神上的疲惫，导致动力下降、表现不佳和消极态度。

They theorized that earlier start times would be associated with lower performance in almost all of those areas - particularly in disadvantaged schools.

他们的理论是，在几乎所有这些领域中，更早的上学时间与更差的表现都有关联—尤其是在处境较差的学校里。

Another study from 2001 found that children with lower academic performance in middle school are more likely to have snored during early childhood.

另一项2001年的研究发现，中学成绩较差的学生更容易在小时候打鼾。

They were not just disapproving; they also said they would be more likely to give the gossiper lower performance ratings and to recommend bonus reductions.

他们不仅表示不赞成，他们还表示自己更有可能给八卦者打更低的绩效评级，并建议减少奖金。

Minority voters were expected to make up for Clinton’s lower performance among white male voters, especially following xenophobic, and arguably racist rhetoric from Trump.

预计少数族裔选民将弥补克林顿在白人男性选民中的较低表现，尤其是在特朗普发表仇外和可以说是种族主义言论之后。

Because of the single lens, and because of how portrait mode works on the iPhone XR, you actually get a lower aperture, so you're getting better low light performance.

因为是单镜头，iPhone XR 上的肖像模式实际上光圈比较低，所以它的光效比较低。