jiàoshì lǐ chángjiàn de zhǎnshì biāoshí yǒu tóuyǐng yīnliàng quánpíng gòngxiǎng píngmù

教室里常见的展示标识有“投影”“音量”“全屏”“共享屏幕”。

Common display labels in the classroom include 'projection', 'volume', 'full screen', and 'share screen'.