But Steve Graham at Vanderbilt says word processing is rarely done in elementary school, especially in the early years.

VOA: special.2009.10.29

Now I am going to break this into elementary steps and look at the relative contributions.

我会把这整个变化过程化为几个基本的步骤,去考察每一步的变化量。

麻省理工公开课 - 固态化学导论课程节选

The children are all fourth-graders at a Washington-area elementary school.

VOA: special.2009.12.21