mean day flow 平均日流量
mean solar day 平均太阳日 ; [天] 平太阳日
mean lunar day 平均太阴日 ; 平太阴日
mean equatorial day 平赤道日
mean sidereal day 平均恒星日
day mean systolic blood pressure 昼间平均收缩压
day mean diastolic blood pressure 昼间平均舒张压
ten-day mean 旬平均
ten day mean 旬平均
And what does Valentine's Day mean to their children in school?
VOA: special.2010.02.08
It used to be the case that-- well I mean my guess is that very few of you probably go through a day without interacting with a water bottle at some point.
以前的情况是,我是说,我猜在座很少有人经历过,一整天不带水壶的日子
I mean, from day one, I was taught, I was shown football, baseball, sports, you know.
我想说,从一开始,人们就教我,给我看橄榄球、棒球这些运动。
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