哺乳动物的境况好些，只有九分之二显著受油污染。
Mammals fared better, with two out of nine live mammals collected visibly oiled.
考虑到近三分之二的学生都将经历“九年级冲击，即学生的学习成绩急剧下降。
Consider that nearly two-thirds of students will experience the "ninth-grade shock," which refers to a dramatic drop in a student's academic performance.
更重要的是，研究中发现平均服用中草药九个月后，有三分之二的人没有出现糖尿病。
What's more, people using the remedies were two-thirds less likely to progress to diabetes during the studies, which ran for an average of nine months.
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