classroom instructional hours
According to ,after 12 years of daily French classes, only one high school graduateout of 147 (0.68%) achieved “intermediate” proficiency. of immigrants learning English in the US showed that “classroom instructional hours” had little impact on progress.
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classroom instructional hours
课堂教学时数
以上为机器翻译结果，长、整句建议使用 人工翻译 。