A man, wearing black jeans and a gray shirt, stands in the front of a classroom writing on a chalkboard. A man is writing on a chalkboard full of paragraphs with a pencil in his ear. A boy with a pencil behind his ear writes on a chalkboard. A person is writing on a chalkboard in a empty classroom. A man is describing stuff using chalk on a chalkboard.
A man, wearing black jeans and a gray shirt, stands in the front of a classroom writing on a chalkboard. A man is writing on a chalkboard full of paragraphs with a pencil in his ear. A boy with a pencil behind his ear writes on a chalkboard. A person is writing on a chalkboard in a empty classroom. A man is describing stuff using chalk on a chalkboard. 一名身穿黑色牛仔裤和灰色衬衫的男子站在教室前面，在黑板上写字。 一个男人正在写满段落的黑板前写字，耳朵上夹着一支铅笔。 一个耳朵后面夹着铅笔的男孩在黑板上写字。 一个人在空荡荡的教室里在黑板上写字。 一个人正在用粉笔在黑板上描述东西。 黒いジーンズと灰色のシャツを着た男性が、教室の前で黒板に字を書きながら立っています。 黒板いっぱいに段落を書いている男性で、耳に鉛筆を挟んでいます。 耳に鉛筆を挟んだ少年が黒板に書いています。 空っぽの教室で、黒板に字を書いている人がいます。 黒板にチョークを使って物事を説明している男性。