成功的人通常只占百分之几。
尘埃颗粒只约占组成介质群的百分之一,氢占百分之八十,其余的全是氦。
Dust grains are only about 1 percent of its mass, with hydrogen accounting for 80 percent and helium providing most of the rest.
如今,包括太阳能、燃料乙醇等在内的可再生能源在美国的能源结构中占百分之7。
Renewable energy, such as from photovoltaic electricity and ethanol, today supplies less than 7 percent of U.S. consumption.
And I put on the sheet this year--I think I'm going to try to count five percent for class participation.
今年的课程,我想我将会把出勤率,按照占百分之五的学分计算
There's a term paper which i'll talk more about as the weeks go on that's also worth 30% of the grade.
随着课程的进行我会在讲到学期论文,这也占成绩的百分之三十
However, if there are repeated, unexcused absences, there will be an adjustment in the grade calculation, and it will be worth twenty to twenty-five percent of your grade, and it will be a negative grade also.
然而,如果有反复的没有理由的缺勤,就会对这个百分比做些调整,出勤率就会占到你分数的百分之二十到二十五,当然也会是负面的评分。
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