彼らはそのころ小学生でした。

tbd

They were school children then.

彼はまるで小学生のように赤くなった。

tbd

He reddened like a schoolboy.

日本人の中には、小学生になっても両親と一緒に寝ているものさえいる。

tbd

Some Japanese may continue to sleep with both parents even during elementary school days.

小学生は６年間学校に通う。

tbd

Elementary school children go to school for a term of six years.

メアリーは小学生のころ先生になることを夢見ていた。

tbd

In her elementary school days, Mary dreamed of becoming a teacher.

この問題は難しすぎて小学生には解けないよ。

tbd

This problem is too difficult for grade school children to solve.

This problem is too difficult for primary school children to solve.

This problem is too difficult for elementary school children to solve.