Four years of elementary education are not enough to fix knowledge firmly in the pupils' minds, especially under the conditions prevailing in Angolan schools in recent years, which have hardly been conducive to learning.
四年的小学教育并不足以使所学知识在小学生头脑中扎下根，尤其是，近年来安哥拉学校状况普遍欠佳，不利于学生学习。