他在18岁时取得了他的第一个显著成就。
And when they consulted additional national databases, they found that physical fitness at the age of 18 also foreshadowed greater academic achievement later in life.之后这些科学家又查询了全国范围内的数据库,又发现在18岁时保持身材匀称、健康的人大都会在未来人生中取得更高的学术成就。
About 10% of school-age children have persistent and significant difficulties with math, while many more fail to reach basic levels of mathematics achievement.约10%的学龄儿童有着持续明显的数学学习困难,其中很多人数学成绩不及格。