New blackboards have been fitted up in all the classrooms.

教室里都安裝上了新黑板.

《簡明英漢詞典》

How many blackboards are there in this room?

在這個(gè)房間里有幾塊黑板?

互聯(lián)網(wǎng)

Some cleaned the blackboards, others mopped the floor.

有些人擦黑板, 有些人拖地板.

互聯(lián)網(wǎng)

In early times, teachers often use the traditional aids, which mainly include blackboards, models and charts.

在早期, 教師一般使用傳統(tǒng)教具, 其中主要包括黑板, 模型和圖畫(圖片)等.

互聯(lián)網(wǎng)