纯利润率值免费学习初级法语在10%，才被认为是好的。
A net profit margin of at least 10 percent is considered good.
本科留学生每学期所修课程不少于三门，学习目的明确，态度认真，勤奋刻苦，上课出勤率在90%以上。
Bachelor students must study at lease 3 courses each term and attend 90% of the class.
结论青少年伤害发生率高，学习负担和亚健康状态可较好预测伤害发生。
Conclusion Injury rate is high in adolescents. Study burden and sub-health status may predict injuries.
结论青少年伤害发生率高，学习负担和亚健康状态可较好预测伤害发生。
Conclusion Injury rate is high in adolescents. Study burden and sub-health status may predict injuries.
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